Zoom is one of the most popular video conferencing apps out there.
When you were told a meeting would be held by video conferencing, it was usually by Zoom.
You warn them, even a few times, but they wont listen and keep causing trouble.
you might do this by tapping on theParticipants icon(the one that likes to profile cions together).
Once youre in go to prefs > Meeting > In-Meeting Basic > Enable Allow removed participants to rejoin.
But, sometimes there are users that are asking for it.