2021
https://www.maketecheasier.com/cheatsheet/microsoft-teams-keyboard-shortcuts/

https://support.microsoft.com/en-us/office/keyboard-shortcuts-for-microsoft-teams-2e8e2a70-e8d8-4a19-949b-4c36dd5292d2
C-.
    show shortcuts
C-/
    show commands
C-S-,
    open settings