If you have a Mac, you can delete screen mirroring on the fly by going to System Preferences and clicking on the “Screen Mirroring” tab. There you will find a list of options for how to manage your screen mirroring. You can choose to keep all your screens in one place by checking the “Keep All Screens” box, or you can choose to mirror just one screen at a time by checking the “Mirror One Screen at a Time” box. If you want to use an external monitor with your Mac, you will need to check the “Use External Monitor” box.
