- In your Zoom keyboard shortcuts setting, check
Enable Global Shortcutfor
Mute/Unmute My Audio
- Install BetterTouchTool
- Install the below preset, or make one of your own.
This works by creating 2 triggers on the same action (below it's the middle mouse button, but it could be any shortcut). One action triggers on the down press, and one on the up press, but both trigger the Cmd-Shift-A shortcut configured in Zoom. This unmutes on the downp ress, and then mutes again on the up press