Mute All button request for FaceTime

My family and friends are often on FaceTime calls while also at work. One feature that seems to be forgotten but would be extremely useful is the ability mute all others in FaceTime call. When I’m at work and in need to answer a call I have to mute myself and turn down my volume so that I can keep my AirPod in. We need a button that mutes the entire FaceTime call so that it is simple to do so while at a busy work day. Thank you!

[Re-Titled by Moderator]