Use Zoom's Whiteboard Feature with an Interactive White Board (SMARTBoard, Mimio etc..)
How to see who is writing on the board • Zoom White Board | More Details
How to disable letting other participants write on the board • Zoom White Board | More Details
How to prevent Zoom Bombing
Blog https://www.alamo.edu/online/keep-tea...
https://blog.zoom.us/wordpress/2020/0...
Same stuff at this site, but they include more pictures https://www.pcmag.com/how-to/how-to-p...