How do I prevent FaceTime call notifications from exiting fullscreen apps on OS X? When I get a call through FaceTime, it switches away from a full screen app/video I'm using. I don't want to turn it off, because getting calls on the computer is useful, but I don't want it to automatically switch what I'm doing.
Unfortunately there is no way to prevent an incoming Facetime call from interrupting your workflow.

Apple has a document that outlines what can be configured for Facetime on a Mac.

https://support.apple.com/guide/facetime/change-preferences-fctm35545/mac