A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
You can make PowerPoint change slides automatically by setting a specific time duration in the Transitions tab.
Open your presentation in the desktop version of PowerPoint and click the Transitions tab in the top ribbon. On the far-right side, locate the Timing group.
Check the box next to After, then enter the amount of time you want the slide to remain on the screen. For example, enter 00:05.00 to have the slide remain visible for 5 seconds.
If you do not want the presentation to advance when you click the mouse, uncheck On Mouse Click. You can then click Apply to All if you want the same timing applied to every slide. Alternatively, you can select individual slides and assign different automatic transition times to each one.
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hth
Marcin