When planning my segment, I decided to make slides that would work as a virtual background -- I download them as separate JPGs, add them to the library of Zoom backgrounds, and keep that Settings window open while on-camera so I can click to change what appears behind me. I used this technique on my FlipTech2020 video about SBG, because it's so much easier than using the greenscreen feature in editing programs like iMovie. I hoped this would make the slidedeck sharing less awkward than screen-sharing sometimes turns out to be.
Brenda, one of those IT Specialists, informed me about a program that could make this technique even easier and better. You gotta check out this preview:
I actually had a jawdrop moment at the 1:25 mark when the guy shrinks himself and again at 1:47 when he fades and starts moving his webcam video section all over the screen. The video looks a little choppy, like 18 fps instead of the usual 24 ... but that is a very small price to pay for these excellent features to really improve synchronous and especially asychronous video-based teaching.