I do exactly this. OBS is, in my opinion, what you want. It's worth learning for this problem alone. In short: get OBS installed and started. Then add the web

I do exactly this. OBS is, in my opinion, what you want. It's worth learning for this problem alone. In short: get OBS installed and started. Then add the web cam as a camera source to the default scene. Then load up PowerPoint, Google Slides, whatever, and add that window as a "Windows Source". Make sure the web camera is above the "Window Source" in the list of sources - they're like layers on a cake. You can edit the web camera source in the live preview to then be a box in one of the lower corners (this is called picture-in-picture). I recommend crafting the slides to support having a picture-in-picture setup. Here's a (very large, sorry) example lecture I did for Chester University in England: https://drive.google.com/open?id=1xT31CU8Lfob88FxaDXAVWy-uXCNjNIQ4 https://drive.google.com/open?id=1xT31CU8Lfob88FxaDXAVWy-uXC... -- skip to about 3-4 minutes in to see how I'm presenting the slides, then jump to about 22m in to see how I present a terminal for programming needs. Reach out and let me know if I can help you or your wife with this. I'm keen to help anyone having to go remote for this sort of thing.