How to Disable FaceTime on Mac
Some Mac users may wish to turn off FaceTime on their computer, thereby preventing FaceTime calls from ringing on the Mac, and also turning off the ability to make outbound calls too.
By disabling FaceTime on the Mac, the Mac will not be able to accept, receive, or make any FaceTime calls, whether they are audio or video calls. This is an easy feature to turn off and on at any time, so you can also quickly re-enable FaceTime if you do want to use the feature on the Mac.