How to mute all participants in your Zoom meeting
You can mute all of the participants in your meeting and restrict their ability to unmute themselves. This will prevent any unwanted interruptions during your Zoom meeting. You can individually Unmute students to allow them to participate or ask questions as needed. It is also possible to set all Participants to Mute on Entry when setting up your meeting.
To mute all of your Zoom meeting participants
Step 1. Once in your Zoom meeting, click on Manage Participants on the bottom toolbar in the Zoom meeting window.
Step 2. In the lower right-hand corner of the Manage Participant window, click on the Mute All button.

Step 3. In the dialog box that opens, make sure the “Allow Participants to Unmute Themselves” option is unchecked. Click the Yes button to mute all of the participants in the meeting. This setting does not affect meeting hosts or co-hosts.