Good Afternoon All
It seems with every update or Patch Microsoft incorporates more Lync client shortcuts. With this in mind the below are the ones at the time of writing are available across the lync client application.
I will continue to update the list as and when a shortcut becomes available.
Below is the present list from the Microsoft page
Find shortcuts for
General (any window)
Use the following keyboard shortcuts no matter which window has the focus.
Windows logo key+A Accept an incoming invite notification.
Windows logo key+Esc Decline an invite notification.
Windows logo key+Y Open the main window and put focus in the search box.
Windows logo key+F4 Self-mute/unmute audio.
Windows logo key+F5 Turn my Camera On/Turn my Camera Off when video is already established in the call.
Ctrl+Shift+Spacebar Put focus on the application sharing toolbar.
Ctrl+Alt+Spacebar Take back control when sharing your screen.
Ctrl+Shift+S Stop sharing your screen.
Lync main window
Ctrl+1 Move to the Contacts list tab.
Ctrl+2 Move to the persistent chat tab.
Ctrl+3 Move to the Conversation list tab.
Ctrl+4 Move to the Phone tab.
Ctrl+1 or Ctrl+Shift+1 As a delegate, transfer a call to someone else’s work number. (Not available in Lync Basic or with all Office 365 subscriptions.)
Alt+Spacebar Open the System menu. Alt opens the menu bar.
Alt+F Open the File menu.
Alt+M Start Meet Now.
Alt+T Open the Tools menu.
Alt+H Open the Help menu.
Delete Delete the selected custom group or contact.
Alt+Up Arrow Move the selected group up.
Alt+Down Arrow Move the selected group down.
Alt+Enter On the shortcuts menu─open the selected contact or group contacts card.
Spacebar Collapse or expand the selected group.
Shift+Delete Remove the selected contact from the Contacts list (non-distribution-group members only).
Esc Close the contact card.
Ctrl+Tab Move through the tabs at the bottom of the contact card.
Ctrl+Shift+Tab Move through the tabs at the bottom of the contact card in reverse order.
F1 Open the Help home page (on the Help menu).
Esc Exit full-screen view if present. Otherwise, the Conversation window closes only if there is no audio, video, or sharing occurring.
Alt+C Accept any of the invite notifications. These include audio, video, call, and sharing requests.
Alt+F4 Close the Conversation window.
Alt+l Ignore any invite notifications. These include audio, video, call, and sharing requests.
Alt+R Rejoin audio in a meeting.
Alt+S Open the Save As dialog box for a file that was sent in the Conversation window.
Alt+V Invite a contact to an existing conversation.
Ctrl+S Save the contents of IM history. Works for person-to-person conversations when you use Outlook.
Ctrl+W Show or hide the instant message area.
Ctrl+F Send a file, or in the context of a conference, add a meeting attachment.
Ctrl+N Take your own notes by using Microsoft OneNote note-taking program. Starts OneNote. (Not available in Lync Basic.)
Ctrl+R Show or hide the participant list.
Ctrl+Shift+Enter Add video/end video.
Ctrl+Shift+H Hold or resume an ongoing audio conversation.
Ctrl+Shift+I Mark a conversation as having high importance. Works for person-to-person conversations, but isn’t available for meetings.
Ctrl+Shift+Y Show or hide the sharing stage.
Ctrl+Shift+P Switch to compact view.
Ctrl+Shift+K Switch to content-only view.
Ctrl+Enter Add audio/end audio.
Up Arrow When on a mode button, opens the corresponding callout.
Spacebar When focus is on a mode button, a default action is taken. So for audio, mute or unmute occurs, whereas for video, it starts or stops the camera.
Esc Dismiss or hide an open callout or bubble that has keyboard focus.
Call controls (Conversation window)
Alt+Q End a call.
Ctrl+Shift+T Transfer: Open the contact picker during a peer-to-peer call. (Not available in Lync Basic or with all Office 365 subscriptions.)
Ctrl+Shift+H Put a call on hold.
Ctrl+Shift+D Display the dial pad.
Video (Conversation window)
F5 View video in full screen. If the stage area is visible in the Conversation window, F5 won’t take full-screen video.
Esc Exit full-screen video.
Ctrl+Shift+O Pop out Gallery; Pop in Gallery.
Ctrl+Shift+L Lock your video for everyone in the meeting.
IM (Conversation window)
F1 Open Help.
F12 Save the IM conversation.
Shift+Enter Add carriage returns.
Shift+Insert or Ctrl+V Paste.
Ctrl+A Select all content.
Ctrl+B Make the selected text bold.
Ctrl+C Copy the selected text.
Ctrl+X Cut the selected text.
Ctrl+l Italicize the selected text.
Ctrl+U Underline the selected text.
Ctrl+Y Redo the last action.
Ctrl+Z Undo the last action.
Ctrl+Shift+F Change the color of the font. (Only changes color for what you type, not for what the other person types.)
Alt+P Open a file that’s been received.
Alt+D Decline a file that’s been sent.
Ctrl+Shift+M To get focus to your IM input area.
Conversation or meeting stage
F5 View the Conversation window meeting stage in full screen.
Esc Exit full screen if present.
Alt+T Stop sharing.
Ctrl+Shift+E Manage presentable content.
Ctrl+Shift+Y Show or hide the sharing stage.
Ctrl+Shift+A Force pending L1 alert into view in full screen.
Ctrl+Shift+J Switch to speaker view.
Ctrl+Shift+l Switch to gallery view.
Ctrl+Shift+Right Arrow or Ctrl+Shift+Left Arrow
Tab out of the sharing region in a forward direction, and/or tab out of the sharing region in a backward direction.
Delete Delete selected items.
Home Move top of list.
End Move to bottom of list.
Page Up Move one page up.
Page Down Move one page down.
Up Arrow Move up to the previous contact for conversation.
Down Arrow Move down to the next contact for conversation.
PPT sharing: Legacy PPT viewer
Tab When the content space is in focus, tab through the controls for PPT sharing (Prev arrow, Next arrow, Thumbnails, and Notes).
Right Arrow When focus is on content area, move to the next click, or slide, if no click for animation is on the current slide.
Left or Right Arrow When the thumbnail area is in focus, move focus to the previous or next thumbnail without changing the active slide.
Left Arrow When focus is on content area, move to the previous click, or slide if no click for animation is on the current slide.
Home When thumbnail area is in focus, set the focus on the first slide thumbnail without changing the active slide.
Enter Select the control in focus or thumbnails if thumbnail strip has focus and select (change in active slide).
End When the thumbnail area is in focus, set the focus on the last slide thumbnail without changing the active slide.
Alt+Spacebar Open tab window’s system menu.
Ctrl+Shift+T Set focus on tab item in tabbed conversation view.
Ctrl+Tab Switch to the next tab (continuously loop through all tabs).
Ctrl+1,2…9 Switch to a specific tab number and put keyboard focus in that conversation. Ctrl+1.
Ctrl+O Undock/dock the selected conversation from/to the tab window.
Esc Close a tab.
The persistent chat window uses the same shortcuts as the conversation window and IM. (Not available for Office 365 subscriptions.)