Prevent Zoom Disruptions for Large and Small Meetings
Prevent Participants from:
To change/check the setting, the host should click Security and then under Allow participants to uncheck the options to Share Screen, Chat, Rename themselves, or Unmute themselves.
Restricting Chat (Rather than Turning it Off)
Hosts, Alternative Hosts and Co-Hosts may restrict the Chat to only allow Participants to chat:
In the meeting controls at the bottom of the screen, click 
to open it
Click the ... on the right side of where you type chat messages and select who participants can chat with: No one, Host only, Everyone publicly, Everyone publicly and privately
Remove or Manage Disruptive Participants
Click Participants to open the Participants window, mouse over a participant’s name > click More, and several options will appear, including Stop Video, Attendee on Hold/in Waiting Room, Remove, Report a participant.
You'll also see the option to Mute an individual participant (next to the participant's name on mouse over) or Mute All (near the bottom).
Note: all participants can unmute themselves in Zoom Breakout Rooms regardless of main room settings.
Turn off participant Chat
Turn off Annotation
When sharing your screen or whiteboard, host(s) and participants can use annotation to mark up the shared content. Enable or disable this while sharing screen/whiteboard while using annotation and clicking ...More > Disable Attendee Annotation (or Enable Attendee Annotation to turn it on).
IMPORTANT: Everyone who shares their screen must disable attendee annotation for him/herself. So if the host and two co-hosts will share their screen, each person needs to disable annotation while they are sharing their screen. Tip: before the meeting, have anyone who will share their screen start sharing their screen and disable annotation; then, when they actuyally share screen during the meeting, annotations will still be disabled.
Suspend Participant Activities
If you need to immediately stop all activity, you can use Suspect Participant Activities to, with one click, Mute all participants, Stop videos and screen sharing, Hide profile pictures, Disable in-meeting chat and Zoom Apps, and Lock the Meeting.
Click Security and then Suspend Participant Activities
In the pop up, uncheck Report to Zoom if you don't need to report inappropriate activity to Zoom, and then click Suspend
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