What is the best way or short cut to do a full screen?

If the meeting organizer granted presenter permissions, open the Display tab and you should exit the drop-down menu with the option to share the screen to a different monitor or a specific application. Here, you must select the option to share full screen. In this case, if you are talking about viewing full screen during a meeting, simply use and enter the combination F11 and it will change to full screen. I hope this helps you.