I had a need for multiple camera angles in an upcoming Zoom webinar, but was unable to buy any USB webcams. They are sold out everywhere! I did have quite a few Bosch Dinion IP 5000 HD network cameras, and after some research, I figured out how to use these as webcams in Windows 10. It involved downloading a pre-release version of Windows (I'm using Build 19608), then adding the IP cameras as devices in the Settings menu. There's plenty of documentation online if you do a search. This is just showing how it works in Zoom.