See Enable Attendee On Hold for Your Meetings >

Click Take Off Hold in the Participants list when you’re ready to have them back. Click on someone’s video thumbnail and select Start Attendee On Hold to activate this feature. Put people on hold - You can put everyone else on hold, and the attendees’ video and audio connections will be disabled momentarily.See Allowing Removed Participants or Panelists to Rejoin > But you can toggle your settings to allow removed participants to rejoin, in case you boot the wrong person. Allow removed participants to rejoin - When you do remove someone, they can’t rejoin the meeting.Click that to kick someone out of the meeting. Remove unwanted or disruptive participants - From that Participants menu, you can mouse over a participant’s name, and several options will appear, including Remove.See Host and Co-Host Controls in a Meeting (VIDEO) > In the pop-up, click the button that says Lock Meeting. In the meeting, click Participants at the bottom of your Zoom window.

Lock the meeting - When you lock a Zoom Meeting that’s already started, no new participants can join, even if they have the meeting ID and passcode (if you have required one).See Authentication Profiles for Meetings and Webinars (VIDEO) > Allow only signed-in users to join - If someone tries to join your event and isn’t logged into Zoom with the email they were invited through, they will be asked to sign in.The Zoom web portal has many great features to help secure your Zoom event and host with confidence:

Change zoom personal meeting id