To start a demonstration on a single-monitor computer (for example, when preparing for a presentation), do one of the following:
–On the Home tab, in the File group, click the arrow to the right of the
Start button and run the Start in presenter view command.

–On the Slide show tab, click
Start in presenter view.
–Start the presentation demonstration in normal view in any way that is convenient for you. On the Control bar, click the
button and run the Presenter view command.

To start a demonstration on a computer with two monitors, do one of the following:
–On the Home tab, in the File group, click the arrow to the right of the
Start button and run the Start in presenter view command.
–On the Slide show tab, click
Start in presenter view.
–Start the presentation demonstration in normal view in any way that is convenient for you. The Presenter view will be enabled automatically.