Does anybody know how to do picture in picture regardless to which cam site platform you use? I have seen some broadcasts where the model shows up in the main screen along with a smaller screen on the same broadcast which is meant to show close up views compared to the main broadcast screen.
I haven't tried but what you need is two cameras and OBS, like SexySpookje said. In OBS under the Sources section, you want to Add a Video Source. I'd need to play around a bit with it but that should get you started.