diff --git a/Telegram/Resources/icons/info_administrators.png b/Telegram/Resources/icons/info_administrators.png
new file mode 100644
index 000000000..18629085a
Binary files /dev/null and b/Telegram/Resources/icons/info_administrators.png differ
diff --git a/Telegram/Resources/icons/info_administrators@2x.png b/Telegram/Resources/icons/info_administrators@2x.png
new file mode 100644
index 000000000..c23630fa8
Binary files /dev/null and b/Telegram/Resources/icons/info_administrators@2x.png differ
diff --git a/Telegram/Resources/icons/info_blacklist.png b/Telegram/Resources/icons/info_blacklist.png
new file mode 100644
index 000000000..8907a45cc
Binary files /dev/null and b/Telegram/Resources/icons/info_blacklist.png differ
diff --git a/Telegram/Resources/icons/info_blacklist@2x.png b/Telegram/Resources/icons/info_blacklist@2x.png
new file mode 100644
index 000000000..597edc9db
Binary files /dev/null and b/Telegram/Resources/icons/info_blacklist@2x.png differ
diff --git a/Telegram/Resources/icons/info_recent_actions.png b/Telegram/Resources/icons/info_recent_actions.png
new file mode 100644
index 000000000..ec6b701b0
Binary files /dev/null and b/Telegram/Resources/icons/info_recent_actions.png differ
diff --git a/Telegram/Resources/icons/info_recent_actions@2x.png b/Telegram/Resources/icons/info_recent_actions@2x.png
new file mode 100644
index 000000000..432446119
Binary files /dev/null and b/Telegram/Resources/icons/info_recent_actions@2x.png differ
diff --git a/Telegram/Resources/icons/info_restricted_users.png b/Telegram/Resources/icons/info_restricted_users.png
new file mode 100644
index 000000000..348a6a820
Binary files /dev/null and b/Telegram/Resources/icons/info_restricted_users.png differ
diff --git a/Telegram/Resources/icons/info_restricted_users@2x.png b/Telegram/Resources/icons/info_restricted_users@2x.png
new file mode 100644
index 000000000..e059b2efe
Binary files /dev/null and b/Telegram/Resources/icons/info_restricted_users@2x.png differ
diff --git a/Telegram/Resources/langs/lang.strings b/Telegram/Resources/langs/lang.strings
index d5fc7f8e6..95241634c 100644
--- a/Telegram/Resources/langs/lang.strings
+++ b/Telegram/Resources/langs/lang.strings
@@ -649,6 +649,16 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 "lng_media_selected_link#one" = "{count} Shared link";
 "lng_media_selected_link#other" = "{count} Shared links";
 
+"lng_manage_group_title" = "Manage Group";
+"lng_manage_channel_title" = "Manage Channel";
+"lng_manage_group_info" = "Group Info";
+"lng_manage_channel_info" = "Channel Info";
+"lng_manage_peer_recent_actions" = "Recent Actions";
+"lng_manage_peer_members" = "Members";
+"lng_manage_peer_administrators" = "Administrators";
+"lng_manage_peer_banned_users" = "Banned users";
+"lng_manage_peer_restricted_users" = "Restricted users";
+
 "lng_report_title" = "Report channel";
 "lng_report_group_title" = "Report group";
 "lng_report_bot_title" = "Report bot";
diff --git a/Telegram/SourceFiles/boxes/peer_list_box.cpp b/Telegram/SourceFiles/boxes/peer_list_box.cpp
index d043049de..bf39695a7 100644
--- a/Telegram/SourceFiles/boxes/peer_list_box.cpp
+++ b/Telegram/SourceFiles/boxes/peer_list_box.cpp
@@ -387,7 +387,8 @@ void PeerListRow::paintNameIcon(
 		Painter &p,
 		int x,
 		int y,
-		int outerWidth) {
+		int outerWidth,
+		bool selected) {
 	st::dialogsVerifiedIcon.paint(p, x, y, outerWidth);
 }
 
@@ -1060,7 +1061,8 @@ TimeMs PeerListContent::paintRow(Painter &p, TimeMs ms, RowIndex index) {
 			p,
 			namex + qMin(name.maxWidth(), namew),
 			_st.item.namePosition.y(),
-			width());
+			width(),
+			selected);
 	}
 	auto nameCheckedRatio = row->disabled() ? 0. : row->checkedRatio();
 	p.setPen(anim::pen(st::contactsNameFg, st::contactsNameCheckedFg, nameCheckedRatio));
diff --git a/Telegram/SourceFiles/boxes/peer_list_box.h b/Telegram/SourceFiles/boxes/peer_list_box.h
index 19c128acd..203998f41 100644
--- a/Telegram/SourceFiles/boxes/peer_list_box.h
+++ b/Telegram/SourceFiles/boxes/peer_list_box.h
@@ -91,7 +91,8 @@ public:
 		Painter &p,
 		int x,
 		int y,
-		int outerWidth);
+		int outerWidth,
+		bool selected);
 	virtual QSize actionSize() const {
 		return QSize();
 	}
diff --git a/Telegram/SourceFiles/boxes/peers/manage_peer_box.cpp b/Telegram/SourceFiles/boxes/peers/manage_peer_box.cpp
new file mode 100644
index 000000000..8cd0af796
--- /dev/null
+++ b/Telegram/SourceFiles/boxes/peers/manage_peer_box.cpp
@@ -0,0 +1,228 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop version of Telegram messaging app, see https://telegram.org
+
+Telegram Desktop is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+It is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+In addition, as a special exception, the copyright holders give permission
+to link the code of portions of this program with the OpenSSL library.
+
+Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
+Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
+*/
+#include "boxes/peers/manage_peer_box.h"
+
+#include <rpl/combine.h>
+#include "lang/lang_keys.h"
+#include "ui/wrap/vertical_layout.h"
+#include "ui/widgets/labels.h"
+#include "history/history_admin_log_section.h"
+#include "window/window_controller.h"
+#include "profile/profile_channel_controllers.h"
+#include "info/profile/info_profile_button.h"
+#include "info/profile/info_profile_icon.h"
+#include "info/profile/info_profile_values.h"
+#include "styles/style_boxes.h"
+#include "styles/style_info.h"
+
+namespace {
+
+base::lambda<QString()> ManageBoxTitle(
+		not_null<ChannelData*> channel) {
+	return langFactory(channel->isMegagroup()
+		? lng_manage_group_title
+		: lng_manage_channel_title);
+}
+
+auto ToPositiveNumberString() {
+	return rpl::map([](int count) {
+		return count ? QString::number(count) : QString();
+	});
+}
+
+template <typename Callback>
+Info::Profile::Button *AddButton(
+		not_null<Ui::VerticalLayout*> parent,
+		rpl::producer<QString> &&text,
+		Callback callback,
+		const style::icon &icon) {
+	auto button = parent->add(
+		object_ptr<Info::Profile::Button>(
+			parent,
+			std::move(text),
+			st::managePeerButton));
+	button->addClickHandler(std::forward<Callback>(callback));
+	Ui::CreateChild<Info::Profile::FloatingIcon>(
+		button,
+		icon,
+		st::managePeerButtonIconPosition);
+	return button;
+}
+
+template <typename Callback>
+void AddButtonWithCount(
+		not_null<Ui::VerticalLayout*> parent,
+		rpl::producer<QString> &&text,
+		rpl::producer<QString> &&count,
+		Callback callback,
+		const style::icon &icon) {
+	auto button = AddButton(
+		parent,
+		std::move(text),
+		std::forward<Callback>(callback),
+		icon);
+	auto label = Ui::CreateChild<Ui::FlatLabel>(
+		button,
+		std::move(count),
+		st::managePeerButtonLabel);
+	rpl::combine(button->widthValue(), label->widthValue())
+		| rpl::start_with_next([label](int outerWidth, int width) {
+			label->moveToRight(
+				st::managePeerButtonLabelPosition.x(),
+				st::managePeerButtonLabelPosition.y(),
+				outerWidth);
+		}, label->lifetime());
+}
+
+bool HasRecentActions(not_null<ChannelData*> channel) {
+	return channel->hasAdminRights() || channel->amCreator();
+}
+
+void ShowRecentActions(
+		not_null<Window::Controller*> controller,
+		not_null<ChannelData*> channel) {
+	controller->showSection(
+		AdminLog::SectionMemento(channel),
+		Window::SectionShow());
+
+}
+
+void FillManageBox(
+		not_null<Window::Controller*> controller,
+		not_null<ChannelData*> channel,
+		not_null<Ui::VerticalLayout*> content) {
+	using Profile::ParticipantsBoxController;
+
+	auto isGroup = channel->isMegagroup();
+	if (channel->canEditInformation()) {
+		AddButton(
+			content,
+			Lang::Viewer(isGroup
+				? lng_manage_group_info
+				: lng_manage_channel_info),
+			[=] {
+
+			},
+			st::infoIconInformation);
+	}
+	if (HasRecentActions(channel)) {
+		AddButton(
+			content,
+			Lang::Viewer(lng_manage_peer_recent_actions),
+			[=] { ShowRecentActions(controller, channel); },
+			st::infoIconRecentActions);
+	}
+	if (channel->canViewMembers()) {
+		AddButtonWithCount(
+			content,
+			Lang::Viewer(lng_manage_peer_members),
+			Info::Profile::MembersCountValue(channel)
+				| ToPositiveNumberString(),
+			[=] {
+				ParticipantsBoxController::Start(
+					controller,
+					channel,
+					ParticipantsBoxController::Role::Members);
+			},
+			st::infoIconMembers);
+	}
+	if (channel->canViewAdmins()) {
+		AddButtonWithCount(
+			content,
+			Lang::Viewer(lng_manage_peer_administrators),
+			Info::Profile::AdminsCountValue(channel)
+				| ToPositiveNumberString(),
+			[=] {
+				ParticipantsBoxController::Start(
+					controller,
+					channel,
+					ParticipantsBoxController::Role::Admins);
+			},
+			st::infoIconAdministrators);
+	}
+	if (channel->canViewBanned()) {
+		AddButtonWithCount(
+			content,
+			Lang::Viewer(lng_manage_peer_restricted_users),
+			Info::Profile::RestrictedCountValue(channel)
+				| ToPositiveNumberString(),
+			[=] {
+				ParticipantsBoxController::Start(
+					controller,
+					channel,
+					ParticipantsBoxController::Role::Restricted);
+			},
+			st::infoIconRestrictedUsers);
+		AddButtonWithCount(
+			content,
+			Lang::Viewer(lng_manage_peer_banned_users),
+			Info::Profile::KickedCountValue(channel)
+				| ToPositiveNumberString(),
+			[=] {
+				ParticipantsBoxController::Start(
+					controller,
+					channel,
+					ParticipantsBoxController::Role::Kicked);
+			},
+			st::infoIconBlacklist);
+	}
+}
+
+} // namespace
+
+ManagePeerBox::ManagePeerBox(
+	QWidget*,
+	not_null<ChannelData*> channel)
+: _channel(channel) {
+}
+
+bool ManagePeerBox::Available(not_null<ChannelData*> channel) {
+	// canViewAdmins() is removed, because in supergroups it is
+	// always true and in channels it is equal to canViewBanned().
+
+	return channel->canViewMembers()
+//		|| channel->canViewAdmins()
+		|| channel->canViewBanned()
+		|| channel->canEditInformation()
+		|| HasRecentActions(channel);
+}
+
+void ManagePeerBox::prepare() {
+	_channel->updateFull();
+
+	setTitle(ManageBoxTitle(_channel));
+	addButton(langFactory(lng_cancel), [this] { closeBox(); });
+
+	setupContent();
+}
+
+void ManagePeerBox::setupContent() {
+	auto content = Ui::CreateChild<Ui::VerticalLayout>(this);
+	FillManageBox(controller(), _channel, content);
+	widthValue()
+		| rpl::start_with_next([=](int width) {
+			content->resizeToWidth(width);
+		}, content->lifetime());
+	content->heightValue()
+		| rpl::start_with_next([=](int height) {
+			setDimensions(st::boxWidth, height);
+		}, content->lifetime());
+}
diff --git a/Telegram/SourceFiles/boxes/peers/manage_peer_box.h b/Telegram/SourceFiles/boxes/peers/manage_peer_box.h
new file mode 100644
index 000000000..a0acfe37c
--- /dev/null
+++ b/Telegram/SourceFiles/boxes/peers/manage_peer_box.h
@@ -0,0 +1,39 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop version of Telegram messaging app, see https://telegram.org
+
+Telegram Desktop is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+It is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+In addition, as a special exception, the copyright holders give permission
+to link the code of portions of this program with the OpenSSL library.
+
+Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
+Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
+*/
+#pragma once
+
+#include "boxes/abstract_box.h"
+
+class ManagePeerBox : public BoxContent {
+public:
+	ManagePeerBox(QWidget*, not_null<ChannelData*> channel);
+
+	static bool Available(not_null<ChannelData*> channel);
+
+protected:
+	void prepare() override;
+
+private:
+	void setupContent();
+
+	not_null<ChannelData*> _channel;
+
+};
diff --git a/Telegram/SourceFiles/data/data_peer.cpp b/Telegram/SourceFiles/data/data_peer.cpp
index 281c2bea6..56891867a 100644
--- a/Telegram/SourceFiles/data/data_peer.cpp
+++ b/Telegram/SourceFiles/data/data_peer.cpp
@@ -245,16 +245,20 @@ using UpdateFlag = Notify::PeerUpdate::Flag;
 NotifySettings globalNotifyAll, globalNotifyUsers, globalNotifyChats;
 NotifySettingsPtr globalNotifyAllPtr = UnknownNotifySettings, globalNotifyUsersPtr = UnknownNotifySettings, globalNotifyChatsPtr = UnknownNotifySettings;
 
-PeerClickHandler::PeerClickHandler(not_null<PeerData*> peer) : _peer(peer) {
+PeerClickHandler::PeerClickHandler(not_null<PeerData*> peer)
+: _peer(peer) {
 }
 
 void PeerClickHandler::onClick(Qt::MouseButton button) const {
-	if (button == Qt::LeftButton && App::main()) {
-		if (_peer && _peer->isChannel() && App::main()->historyPeer() != _peer) {
+	if (button == Qt::LeftButton && App::wnd()) {
+		auto controller = App::wnd()->controller();
+		if (_peer && _peer->isChannel() && controller->historyPeer.current() != _peer) {
 			if (!_peer->asChannel()->isPublic() && !_peer->asChannel()->amIn()) {
-				Ui::show(Box<InformBox>(lang((_peer->isMegagroup()) ? lng_group_not_accessible : lng_channel_not_accessible)));
+				Ui::show(Box<InformBox>(lang(_peer->isMegagroup()
+					? lng_group_not_accessible
+					: lng_channel_not_accessible)));
 			} else {
-				App::wnd()->controller()->showPeerHistory(
+				controller->showPeerHistory(
 					_peer,
 					Window::SectionShow::Way::Forward);
 			}
@@ -264,15 +268,21 @@ void PeerClickHandler::onClick(Qt::MouseButton button) const {
 	}
 }
 
-PeerData::PeerData(const PeerId &id) : id(id), _colorIndex(peerColorIndex(id)) {
+PeerData::PeerData(const PeerId &id)
+: id(id)
+, _colorIndex(peerColorIndex(id)) {
 	nameText.setText(st::msgNameStyle, QString(), _textNameOptions);
 	_userpicEmpty.set(_colorIndex, QString());
 }
 
-void PeerData::updateNameDelayed(const QString &newName, const QString &newNameOrPhone, const QString &newUsername) {
+void PeerData::updateNameDelayed(
+		const QString &newName,
+		const QString &newNameOrPhone,
+		const QString &newUsername) {
 	if (name == newName) {
 		if (isUser()) {
-			if (asUser()->nameOrPhone == newNameOrPhone && asUser()->username == newUsername) {
+			if (asUser()->nameOrPhone == newNameOrPhone
+				&& asUser()->username == newUsername) {
 				return;
 			}
 		} else if (isChannel()) {
diff --git a/Telegram/SourceFiles/history/history_admin_log_section.h b/Telegram/SourceFiles/history/history_admin_log_section.h
index ab4ea1387..314b43c66 100644
--- a/Telegram/SourceFiles/history/history_admin_log_section.h
+++ b/Telegram/SourceFiles/history/history_admin_log_section.h
@@ -85,7 +85,7 @@ public:
 	Widget(QWidget *parent, not_null<Window::Controller*> controller, not_null<ChannelData*> channel);
 
 	not_null<ChannelData*> channel() const;
-	PeerData *peerForDialogs() const override {
+	PeerData *activePeer() const override {
 		return channel();
 	}
 
diff --git a/Telegram/SourceFiles/history/history_widget.cpp b/Telegram/SourceFiles/history/history_widget.cpp
index fc956e485..8e46127f3 100644
--- a/Telegram/SourceFiles/history/history_widget.cpp
+++ b/Telegram/SourceFiles/history/history_widget.cpp
@@ -1731,6 +1731,7 @@ void HistoryWidget::showHistory(const PeerId &peerId, MsgId showAtMsgId, bool re
 
 	if (peerId) {
 		_peer = App::peer(peerId);
+		_topBar->setHistoryPeer(_peer);
 		_channel = peerToChannel(_peer->id);
 		_canSendMessages = canSendMessages(_peer);
 		_tabbedSelector->setCurrentPeer(_peer);
@@ -1843,6 +1844,9 @@ void HistoryWidget::showHistory(const PeerId &peerId, MsgId showAtMsgId, bool re
 	emit historyShown(_history, _showAtMsgId);
 
 	controller()->historyPeer = _peer;
+	if (_peer) {
+		controller()->activePeer = _peer;
+	}
 	update();
 }
 
diff --git a/Telegram/SourceFiles/info/info.style b/Telegram/SourceFiles/info/info.style
index fe494253c..06c999198 100644
--- a/Telegram/SourceFiles/info/info.style
+++ b/Telegram/SourceFiles/info/info.style
@@ -313,6 +313,10 @@ infoIconMediaLink: icon {{ "info_media_link", infoIconFg }};
 infoIconMediaGroup: icon {{ "info_common_groups", infoIconFg }};
 infoIconMediaVoice: icon {{ "info_media_voice", infoIconFg }};
 infoIconMediaRound: icon {{ "info_media_round", infoIconFg }};
+infoIconRecentActions: icon {{ "info_recent_actions", infoIconFg }};
+infoIconAdministrators: icon {{ "info_administrators", infoIconFg }};
+infoIconBlacklist: icon {{ "info_blacklist", infoIconFg }};
+infoIconRestrictedUsers: icon {{ "info_restricted_users", infoIconFg }};
 infoInformationIconPosition: point(25px, 12px);
 infoNotificationsIconPosition: point(20px, 5px);
 infoSharedMediaIconPosition: point(20px, 24px);
@@ -483,11 +487,21 @@ infoMembersCreatorIcon: icon {{
 	profileAdminStartFg,
 	point(4px, 3px)
 }};
+infoMembersCreatorIconOver: icon {{
+	"profile_admin_star",
+	profileAdminStarFgOver,
+	point(4px, 3px)
+}};
 infoMembersAdminIcon: icon {{
 	"profile_admin_star",
 	profileOtherAdminStarFg,
 	point(4px, 3px)
 }};
+infoMembersAdminIconOver: icon {{
+	"profile_admin_star",
+	profileOtherAdminStarFgOver,
+	point(4px, 3px)
+}};
 infoMembersRemoveIcon: icon {{
 	"simple_close",
 	menuIconFg
@@ -522,3 +536,13 @@ infoCommonGroupsList: PeerList(infoMembersList) {
 		statusPosition: point(79px, 31px);
 	}
 }
+
+managePeerButton: InfoProfileButton(infoProfileButton) {
+	padding: margins(76px, 10px, 76px, 8px);
+}
+managePeerButtonIconPosition: infoSharedMediaButtonIconPosition;
+managePeerButtonLabel: FlatLabel(defaultFlatLabel) {
+	textFg: windowActiveTextFg;
+	style: semiboldTextStyle;
+}
+managePeerButtonLabelPosition: point(25px, 10px);
diff --git a/Telegram/SourceFiles/info/info_section_widget.cpp b/Telegram/SourceFiles/info/info_section_widget.cpp
index 7a8d7d7b9..fff4f9846 100644
--- a/Telegram/SourceFiles/info/info_section_widget.cpp
+++ b/Telegram/SourceFiles/info/info_section_widget.cpp
@@ -56,8 +56,8 @@ void SectionWidget::init() {
 		}, _content->lifetime());
 }
 
-PeerData *SectionWidget::peerForDialogs() const {
-	return _content->peerForDialogs();
+PeerData *SectionWidget::activePeer() const {
+	return _content->activePeer();
 }
 
 bool SectionWidget::hasTopBarShadow() const {
diff --git a/Telegram/SourceFiles/info/info_section_widget.h b/Telegram/SourceFiles/info/info_section_widget.h
index 7ee9f899d..6dd34ae8d 100644
--- a/Telegram/SourceFiles/info/info_section_widget.h
+++ b/Telegram/SourceFiles/info/info_section_widget.h
@@ -48,7 +48,7 @@ public:
 		Wrap wrap,
 		not_null<MoveMemento*> memento);
 
-	PeerData *peerForDialogs() const override;
+	PeerData *activePeer() const override;
 
 	bool hasTopBarShadow() const override;
 	QPixmap grabForShowAnimation(
diff --git a/Telegram/SourceFiles/info/info_wrap_widget.h b/Telegram/SourceFiles/info/info_wrap_widget.h
index e15dba0d0..d0b7f1da0 100644
--- a/Telegram/SourceFiles/info/info_wrap_widget.h
+++ b/Telegram/SourceFiles/info/info_wrap_widget.h
@@ -88,7 +88,7 @@ public:
 		not_null<Memento*> memento);
 
 	not_null<PeerData*> peer() const;
-	PeerData *peerForDialogs() const override {
+	PeerData *activePeer() const override {
 		return peer();
 	}
 	Wrap wrap() const {
diff --git a/Telegram/SourceFiles/info/profile/info_profile_members_controllers.cpp b/Telegram/SourceFiles/info/profile/info_profile_members_controllers.cpp
index 0a4b562a3..f6e5dea5a 100644
--- a/Telegram/SourceFiles/info/profile/info_profile_members_controllers.cpp
+++ b/Telegram/SourceFiles/info/profile/info_profile_members_controllers.cpp
@@ -363,11 +363,16 @@ void MemberListRow::paintNameIcon(
 		Painter &p,
 		int x,
 		int y,
-		int outerWidth) {
+		int outerWidth,
+		bool selected) {
 	auto icon = [&] {
 		return (_type.rights == Rights::Admin)
-			? &st::infoMembersAdminIcon
-			: &st::infoMembersCreatorIcon;
+			? (selected
+				? &st::infoMembersAdminIconOver
+				: &st::infoMembersAdminIcon)
+			: (selected
+				? &st::infoMembersCreatorIconOver
+				: &st::infoMembersCreatorIcon);
 	}();
 	icon->paint(p, x, y, outerWidth);
 }
diff --git a/Telegram/SourceFiles/info/profile/info_profile_members_controllers.h b/Telegram/SourceFiles/info/profile/info_profile_members_controllers.h
index 56762d9fe..2c1ad5fd6 100644
--- a/Telegram/SourceFiles/info/profile/info_profile_members_controllers.h
+++ b/Telegram/SourceFiles/info/profile/info_profile_members_controllers.h
@@ -58,7 +58,8 @@ public:
 		Painter &p,
 		int x,
 		int y,
-		int outerWidth) override;
+		int outerWidth,
+		bool selected) override;
 
 	not_null<UserData*> user() const {
 		return peer()->asUser();
diff --git a/Telegram/SourceFiles/info/profile/info_profile_values.cpp b/Telegram/SourceFiles/info/profile/info_profile_values.cpp
index 7d1d535f4..5bbc677b3 100644
--- a/Telegram/SourceFiles/info/profile/info_profile_values.cpp
+++ b/Telegram/SourceFiles/info/profile/info_profile_values.cpp
@@ -202,6 +202,45 @@ rpl::producer<int> MembersCountValue(
 	Unexpected("User in MembersCountViewer().");
 }
 
+rpl::producer<int> AdminsCountValue(
+		not_null<ChannelData*> channel) {
+	using Flag = Notify::PeerUpdate::Flag;
+	return Notify::PeerUpdateValue(
+		channel,
+		Flag::AdminsChanged | Flag::ChannelRightsChanged)
+		| rpl::map([channel] {
+			return channel->canViewAdmins()
+				? channel->adminsCount()
+				: 0;
+		});
+}
+
+rpl::producer<int> RestrictedCountValue(
+		not_null<ChannelData*> channel) {
+	using Flag = Notify::PeerUpdate::Flag;
+	return Notify::PeerUpdateValue(
+		channel,
+		Flag::BannedUsersChanged | Flag::ChannelRightsChanged)
+		| rpl::map([channel] {
+			return channel->canViewBanned()
+				? channel->restrictedCount()
+				: 0;
+		});
+}
+
+rpl::producer<int> KickedCountValue(
+		not_null<ChannelData*> channel) {
+	using Flag = Notify::PeerUpdate::Flag;
+	return Notify::PeerUpdateValue(
+		channel,
+		Flag::BannedUsersChanged | Flag::ChannelRightsChanged)
+		| rpl::map([channel] {
+			return channel->canViewBanned()
+				? channel->kickedCount()
+				: 0;
+		});
+}
+
 rpl::producer<int> SharedMediaCountValue(
 		not_null<PeerData*> peer,
 		PeerData *migrated,
diff --git a/Telegram/SourceFiles/info/profile/info_profile_values.h b/Telegram/SourceFiles/info/profile/info_profile_values.h
index 3852ab82f..79ead5e86 100644
--- a/Telegram/SourceFiles/info/profile/info_profile_values.h
+++ b/Telegram/SourceFiles/info/profile/info_profile_values.h
@@ -75,6 +75,12 @@ rpl::producer<bool> AmInChannelValue(
 	not_null<ChannelData*> channel);
 rpl::producer<int> MembersCountValue(
 	not_null<PeerData*> peer);
+rpl::producer<int> AdminsCountValue(
+	not_null<ChannelData*> channel);
+rpl::producer<int> RestrictedCountValue(
+	not_null<ChannelData*> channel);
+rpl::producer<int> KickedCountValue(
+	not_null<ChannelData*> channel);
 rpl::producer<int> SharedMediaCountValue(
 	not_null<PeerData*> peer,
 	PeerData *migrated,
diff --git a/Telegram/SourceFiles/mainwidget.cpp b/Telegram/SourceFiles/mainwidget.cpp
index f2ad4e059..306407568 100644
--- a/Telegram/SourceFiles/mainwidget.cpp
+++ b/Telegram/SourceFiles/mainwidget.cpp
@@ -271,7 +271,7 @@ MainWidget::MainWidget(
 	});
 
 	using namespace rpl::mappers;
-	_controller->historyPeer.value()
+	_controller->activePeer.value()
 		| rpl::map([](PeerData *peer) {
 			auto canWrite = peer
 				? Data::CanWriteValue(peer)
@@ -2432,7 +2432,7 @@ void MainWidget::ui_showPeerHistory(
 				break;
 			}
 		}
-		if (auto historyPeer = _history->peer()) {
+		if (auto historyPeer = _controller->historyPeer.current()) {
 			if (way == Way::Forward && historyPeer->id == peerId) {
 				way = Way::ClearStack;
 			}
@@ -2552,6 +2552,10 @@ void MainWidget::ui_showPeerHistory(
 		_dialogs->update();
 	}
 
+	if (!peerId) {
+		_controller->activePeer = nullptr;
+	}
+
 	checkFloatPlayerVisibility();
 }
 
@@ -2577,10 +2581,6 @@ void MainWidget::peerAfter(const PeerData *inPeer, MsgId inMsg, PeerData *&outPe
 	_dialogs->peerAfter(inPeer, inMsg, outPeer, outMsg);
 }
 
-PeerData *MainWidget::historyPeer() {
-	return _history->peer();
-}
-
 PeerData *MainWidget::peer() {
 	return _overview ? _overview->peer() : _history->peer();
 }
@@ -2962,6 +2962,10 @@ void MainWidget::showNewSection(
 		settingSection->showFast();
 	}
 
+	if (settingSection.data() == _mainSection.data()) {
+		_controller->activePeer = _mainSection->activePeer();
+	}
+
 	checkFloatPlayerVisibility();
 	orderWidgets();
 }
@@ -3530,8 +3534,11 @@ void MainWidget::updateThirdColumnToCurrentPeer(
 	} else {
 		Auth().data().setTabbedReplacedWithInfo(false);
 		if (!peer) {
-			_thirdSection.destroy();
-			_thirdShadow.destroy();
+			if (_thirdSection) {
+				_thirdSection.destroy();
+				_thirdShadow.destroy();
+				updateControlsGeometry();
+			}
 		} else if (Adaptive::ThreeColumn()
 			&& Auth().data().thirdSectionInfoEnabled()) {
 			switchInfoFast();
diff --git a/Telegram/SourceFiles/mainwidget.h b/Telegram/SourceFiles/mainwidget.h
index 0144793e9..2a8488161 100644
--- a/Telegram/SourceFiles/mainwidget.h
+++ b/Telegram/SourceFiles/mainwidget.h
@@ -149,7 +149,6 @@ public:
 
 	void peerBefore(const PeerData *inPeer, MsgId inMsg, PeerData *&outPeer, MsgId &outMsg);
 	void peerAfter(const PeerData *inPeer, MsgId inMsg, PeerData *&outPeer, MsgId &outMsg);
-	PeerData *historyPeer();
 	PeerData *peer();
 
 	PeerData *activePeer();
diff --git a/Telegram/SourceFiles/profile/profile_common_groups_section.h b/Telegram/SourceFiles/profile/profile_common_groups_section.h
index f9afacac8..b0734f028 100644
--- a/Telegram/SourceFiles/profile/profile_common_groups_section.h
+++ b/Telegram/SourceFiles/profile/profile_common_groups_section.h
@@ -177,7 +177,7 @@ public:
 	Widget(QWidget *parent, not_null<Window::Controller*> controller, not_null<UserData*> user);
 
 	not_null<UserData*> user() const;
-	PeerData *peerForDialogs() const override {
+	PeerData *activePeer() const override {
 		return user();
 	}
 
diff --git a/Telegram/SourceFiles/profile/profile_widget.h b/Telegram/SourceFiles/profile/profile_widget.h
index 6fc462d95..b43a80cd4 100644
--- a/Telegram/SourceFiles/profile/profile_widget.h
+++ b/Telegram/SourceFiles/profile/profile_widget.h
@@ -39,7 +39,7 @@ public:
 	Widget(QWidget *parent, not_null<Window::Controller*> controller, PeerData *peer);
 
 	PeerData *peer() const;
-	PeerData *peerForDialogs() const override {
+	PeerData *activePeer() const override {
 		return peer();
 	}
 
diff --git a/Telegram/SourceFiles/rpl/rpl.h b/Telegram/SourceFiles/rpl/rpl.h
index 1805607f6..67505b4a3 100644
--- a/Telegram/SourceFiles/rpl/rpl.h
+++ b/Telegram/SourceFiles/rpl/rpl.h
@@ -20,6 +20,8 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 */
 #pragma once
 
+// rpl - reactive programming library
+
 #include <rpl/lifetime.h>
 #include <rpl/consumer.h>
 #include <rpl/producer.h>
diff --git a/Telegram/SourceFiles/window/section_widget.h b/Telegram/SourceFiles/window/section_widget.h
index 1847ec398..1b3ae98db 100644
--- a/Telegram/SourceFiles/window/section_widget.h
+++ b/Telegram/SourceFiles/window/section_widget.h
@@ -82,7 +82,7 @@ class SectionWidget : public AbstractSectionWidget {
 public:
 	SectionWidget(QWidget *parent, not_null<Window::Controller*> controller);
 
-	virtual PeerData *peerForDialogs() const {
+	virtual PeerData *activePeer() const {
 		return nullptr;
 	}
 
diff --git a/Telegram/SourceFiles/window/top_bar_widget.cpp b/Telegram/SourceFiles/window/top_bar_widget.cpp
index 684ec2fd3..6a59b95c7 100644
--- a/Telegram/SourceFiles/window/top_bar_widget.cpp
+++ b/Telegram/SourceFiles/window/top_bar_widget.cpp
@@ -99,7 +99,7 @@ TopBarWidget::TopBarWidget(
 		});
 	}
 	subscribe(App::histories().sendActionAnimationUpdated(), [this](const Histories::SendActionAnimationUpdate &update) {
-		if (App::main() && update.history->peer == App::main()->historyPeer()) {
+		if (update.history->peer == _controller->historyPeer.current()) {
 			rtlupdate(0, 0, width(), height());
 		}
 	});
@@ -139,9 +139,8 @@ void TopBarWidget::onClearSelection() {
 }
 
 void TopBarWidget::onInfoClicked() {
-	auto p = App::main() ? App::main()->historyPeer() : nullptr;
-	if (p) {
-		_controller->showPeerInfo(p);
+	if (auto peer = _controller->historyPeer.current()) {
+		_controller->showPeerInfo(peer);
 	}
 }
 
@@ -205,7 +204,7 @@ void TopBarWidget::toggleInfoSection() {
 		&& (Auth().data().thirdSectionInfoEnabled()
 			|| Auth().data().tabbedReplacedWithInfo())) {
 		_controller->closeThirdSection();
-	} else if (auto peer = App::main()->historyPeer()) {
+	} else if (auto peer = _controller->historyPeer.current()) {
 		if (_controller->canShowThirdSection()) {
 			Auth().data().setThirdSectionInfoEnabled(true);
 			Auth().saveDataDelayed();
@@ -289,7 +288,7 @@ void TopBarWidget::paintUnreadCounter(Painter &p, int outerWidth) {
 	auto fullCounter = App::histories().unreadBadge() + (Global::IncludeMuted() ? 0 : mutedCount);
 
 	// Do not include currently shown chat in the top bar unread counter.
-	if (auto historyShown = App::historyLoaded(App::main()->historyPeer())) {
+	if (auto historyShown = App::historyLoaded(App::wnd()->controller()->historyPeer.current())) {
 		auto shownUnreadCount = historyShown->unreadCount();
 		if (!historyShown->mute() || Global::IncludeMuted()) {
 			fullCounter -= shownUnreadCount;
@@ -370,7 +369,6 @@ void TopBarWidget::animationFinished() {
 }
 
 void TopBarWidget::updateControlsVisibility() {
-	auto historyPeer = App::main() ? App::main()->historyPeer() : nullptr;
 	auto overviewPeer = App::main() ? App::main()->overviewPeer() : nullptr;
 
 	_clearSelection->show();
@@ -378,9 +376,9 @@ void TopBarWidget::updateControlsVisibility() {
 	_forward->setVisible(_canForward);
 
 	_mediaType->setVisible(App::main() ? App::main()->showMediaTypeSwitch() : false);
-	if (historyPeer && !overviewPeer) {
+	if (_historyPeer && !overviewPeer) {
 		if (Adaptive::OneColumn() || !App::main()->stackIsEmpty()) {
-			_info->setPeer(historyPeer);
+			_info->setPeer(_historyPeer);
 			_info->show();
 			_menuToggle->hide();
 			_menu.destroy();
@@ -392,7 +390,7 @@ void TopBarWidget::updateControlsVisibility() {
 		_infoToggle->setVisible(!Adaptive::OneColumn()
 			&& _controller->canShowThirdSection());
 		auto callsEnabled = false;
-		if (auto user = historyPeer->asUser()) {
+		if (auto user = _historyPeer->asUser()) {
 			callsEnabled = Global::PhoneCallsEnabled() && user->hasCalls();
 		}
 		_call->setVisible(callsEnabled);
diff --git a/Telegram/SourceFiles/window/top_bar_widget.h b/Telegram/SourceFiles/window/top_bar_widget.h
index 3fabbc739..0e1ba7c71 100644
--- a/Telegram/SourceFiles/window/top_bar_widget.h
+++ b/Telegram/SourceFiles/window/top_bar_widget.h
@@ -52,6 +52,9 @@ public:
 	void updateMembersShowArea();
 
 	Ui::RoundButton *mediaTypeButton();
+	void setHistoryPeer(not_null<PeerData*> historyPeer) {
+		_historyPeer = historyPeer;
+	}
 
 	static void paintUnreadCounter(Painter &p, int outerWidth);
 
@@ -83,6 +86,7 @@ private:
 	int countSelectedButtonsTop(float64 selectedShown);
 
 	not_null<Window::Controller*> _controller;
+	PeerData *_historyPeer = nullptr;
 
 	int _selectedCount = 0;
 	bool _canDelete = false;
diff --git a/Telegram/SourceFiles/window/window_controller.h b/Telegram/SourceFiles/window/window_controller.h
index 9889f9db8..7f10978ad 100644
--- a/Telegram/SourceFiles/window/window_controller.h
+++ b/Telegram/SourceFiles/window/window_controller.h
@@ -90,8 +90,13 @@ public:
 	// This is needed while we have one HistoryWidget and one TopBarWidget
 	// for all histories we show in a window. Once each history is shown
 	// in its own HistoryWidget with its own TopBarWidget this can be removed.
+	//
+	// Also used in the Info::Profile to toggle Send Message button.
 	rpl::variable<PeerData*> historyPeer;
 
+	// This is used for auto-switch in third column Info::Profile.
+	rpl::variable<PeerData*> activePeer;
+
 	void enableGifPauseReason(GifPauseReason reason);
 	void disableGifPauseReason(GifPauseReason reason);
 	base::Observable<void> &gifPauseLevelChanged() {
diff --git a/Telegram/SourceFiles/window/window_peer_menu.cpp b/Telegram/SourceFiles/window/window_peer_menu.cpp
index fa0d31e38..bdb94cfef 100644
--- a/Telegram/SourceFiles/window/window_peer_menu.cpp
+++ b/Telegram/SourceFiles/window/window_peer_menu.cpp
@@ -26,6 +26,7 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 #include "boxes/add_contact_box.h"
 #include "boxes/report_box.h"
 #include "boxes/peer_list_controllers.h"
+#include "boxes/peers/manage_peer_box.h"
 #include "auth_session.h"
 #include "apiwrap.h"
 #include "mainwidget.h"
@@ -153,7 +154,7 @@ Filler::Filler(
 bool Filler::showInfo() {
 	if (_source == PeerMenuSource::Profile) {
 		return false;
-	} else if (_controller->historyPeer.current() != _peer) {
+	} else if (_controller->activePeer.current() != _peer) {
 		return true;
 	} else if (!Adaptive::ThreeColumn()) {
 		return true;
@@ -377,7 +378,14 @@ void Filler::addChatActions(not_null<ChatData*> chat) {
 
 void Filler::addChannelActions(not_null<ChannelData*> channel) {
 	if (_source != PeerMenuSource::ChatsList) {
-		//_addAction(manage);
+		if (ManagePeerBox::Available(channel)) {
+			auto text = lang(channel->isMegagroup()
+				? lng_manage_group_title
+				: lng_manage_channel_title);
+			_addAction(text, [channel] {
+				Ui::show(Box<ManagePeerBox>(channel));
+			});
+		}
 		if (channel->canAddMembers()) {
 			_addAction(
 				lang(lng_channel_add_members),
diff --git a/Telegram/gyp/telegram_sources.txt b/Telegram/gyp/telegram_sources.txt
index 1d652e793..eb13f292c 100644
--- a/Telegram/gyp/telegram_sources.txt
+++ b/Telegram/gyp/telegram_sources.txt
@@ -34,6 +34,8 @@
 <(src_loc)/base/virtual_method.h
 <(src_loc)/base/weak_unique_ptr.h
 <(src_loc)/base/zlib_help.h
+<(src_loc)/boxes/peers/manage_peer_box.cpp
+<(src_loc)/boxes/peers/manage_peer_box.h
 <(src_loc)/boxes/about_box.cpp
 <(src_loc)/boxes/about_box.h
 <(src_loc)/boxes/abstract_box.cpp