"master speaker" for speaking while auto-muting others ?

Hi everybody,

my question sounds "easy", but can't figure out :

I wish to organize 1 meeting between 2 groups. And i wish than ONE (defined) of the 2 groups, may talk and automatically mute the 2nd group during his talk, and automatically unmute after his speech.

You're talking and someone of the 2nd group wish to correct you immediately while muting you at the same time for avoiding brouhaha.  And when they stop talking, you're unmuted.   Something like a "master" speaker i guess.

I think it is possible (easy idea in fact 🙂 )    but how ? (and meeting or webinar in that case ?)

Any idea/suggestion will be welcome