I help run Zoom for our Sunday church services with about 50 or 60 Zoom attendees. We use the waiting room feature. Anyone not recognized can maybe have a few questions asked. As someone else mentioned, we also turn on most of the restrictions (don’t allow people to unmute themselves, no whiteboard or screen sharing, etc). During open comment time, people can raise their virtual hand and the host can unmute them, and be quick with the mute button if the speaker is an ass.