Use the Waiting Room feature in Zoom to control when meeting attendees join the meeting/class. You can admit the meeting attendees one by one or hold all attendees in the waiting room and admit them all at once.
You have the option to send all meeting attendees to the waiting room when they join the Zoom meeting or you can automatically send only anyone that did not sign in or does not have a UAlbany Zoom account to the waiting room. If you are faculty or a student, these settings are already in place. Visit here to learn more.