At first I wasn’t quite sure about this when I read the explanation but then I tried it and realised this could be useful when using Teams, Zoom, Hopin or any other video conferencing platform where you share the screen. It allows you to add your webcam or other camera as live video right there in your PowerPoint presentation.

It could also be useful in a large auditorium where you want the audience to see you. Could you also connect another camera or your iPhone and use that to show the audience something.