Lots of educators have turned to Zoom as a way of delivering content with classes online.
However, lots of Zoom meetings have been interrupted by unwanted guests. This video shows the Zoom security features that exist to ensure that you keep your Zoom rooms secure so that teaching is not interrupted.
Check out this great video from Sabeshan Gnanam on creating a waiting room
https://www.youtube.com/watch?v=_h9Jvep0sUM