Annotate shared screen

I need to annotate a shared screen while walking the team through the slide deck. Share my screen with the deck, enable the annotation tool for myself, then draw a red box around slide three's chart, highlight the three action items, and save the annotated view as a screenshot for the meeting notes. Confirm the screenshot is attached to the chat after you save it.

Before I share the deck with the teachers, make the annotations obvious and undoable: surface the key chart and label its axes, move the three action items to the top and mark them with yellow highlight, and flag anything that could look like a permanent edit so they can approve or reject it quickly.

I began sharing my lesson slide and only I can draw. Sara, Luis and I need to mark up the anatomy diagram together for the next five minutes. I’m afraid the annotation tool is off or attendees are joining without permission. Can you check who currently has annotation rights, enable them for Sara and Luis if possible, and tell me the quickest way to revoke those rights if a student misuses them?

Over the past month I keep stopping class to let students annotate the same diagrams, which eats into teaching time and makes sessions noisy. I want a routine so only two students can annotate at once, annotations are saved automatically, and misuse is reversible without disrupting the class. What exact settings and a five-step on-screen script should I use each class to keep the flow and still let students draw?