The video below for "Zoom Basics" is not a Blakley video but it does discuss and give tips to do a "classroom" zoom meeting.
Remind-Important to do!! Click here for instructions.
In Remind, you can set office hours and adjust how you are notified.
click beside your name in the upper left
click account settings
click notification preferences
you turn on/off email or texting
at the bottom, you can set your office hours - to be honest, I don't know if this blocks them from coming during this time or not.