With PowerPoint 2013 or a more recent version, just link the monitors and PowerPoint automatically initiates Presenter View for you.
Presenter View allows you to view your notes (on the right side of the window, under the thumbnail of the Next Slide) whilst you present, and the audience can only see your slides.
- If Presenter View shows on the wrong screen, you can change the display quickly.
- Deselect Presenter View if you don’t want to use it.