Zoom's Waiting Room feature lets the meeting host decide when a participant joins the meeting.

• People who try to join a meeting without first signing into their Cornell Zoom account are automatically put in a waiting room (this is the default setting for Cornell Zoom for security reasons).
• Meeting hosts also have the option to use a waiting room for all participants, and they can make this choice for all of their meetings or for specific meetings (make these choices in your Zoom settings, in the Meeting tab). 

When the Waiting Room feature is enabled, people trying to join the meeting are automatically put into a waiting room. They will see a notice saying to wait for the meeting host to let them in. (Individuals who are only connected by phone will hear a message saying the host has put them on hold.) 

To admit these individuals to the meeting, the meeting host needs to:

1. Click Manage Participants in the Zoom application.
2. In the Participants pane, either click Admit for individual attendees, or Admit All to let in everyone who's waiting. 

Note: If the host doesn’t have the participant panel open, when when someone enters the waiting room, the Manage Participants icon will flash and a pop-up window will provide an option to admit them.

Also see Zoom's information about the waiting room feature.