Recording Classes

I believe you can record to the cloud and choose "Spotlight" if enough folks have a camera on, and/or spotlight when I speak - https://support.zoom.us/hc/en-us/articles/201362653-Spotlighting-participants-videos

If recording locally, you can do spotlight when I speak, or Pin your video if you have enough folks with camera on - https://support.zoom.us/hc/en-us/articles/201362743-Pinning-participants-videos.  Note that you might have to keep your layout the same the entire time.

Both these options would still record your students' audio if they ask questions, but should record your video and screen if shared.  If you don't want to hear their audio, you can setup the meeting so that all participants are muted upon entry, and or mute everyone once in the meeting and not allowing them to unmute.

Hope this helps.

KJH