Master Mute button for all video streams

[TechGeek]

When I want to look at multiple cameras live and I'm in a situation where I want it muted it would be useful to have a master mute to turn off all of the audio at once instead of having to mute each video stream individually.

[Texas_ERS]

Agreed. Without the mute button we're having to manually turn down volumes on devices; if the background noise isn't necessary, it would be nice to have a master mute button for all the streams/recordings.