While many people make their presentations in the presence of an audience and they move from one slide to the next, not all presentations are delivered this way. Many slide shows are viewed by people at their desk and when you are creating presentations for display this way, you can create a custom navigation scheme for the user to use to progress through the show.
To do this, start by choosing View > Master > Slide Master to move to the Slide Master view. In PowerPoint 2007 select the topmost slide in the layout pane. Choose Slideshow > Action buttons and select the Action Button: Back or Previous. Click and drag the Action button on the slide – the Action Settings dialog shows Hyperlink To: Previous Slide – click Ok.
Repeat and this time add the Action Button: Forward or Next. This Action button is hyperlinked by default to the next slide.
Add an Action button that goes to the first slide by choosing Slideshow > Action buttons > Action Button: Home.
To size the Action buttons Control + Click on each of them in turn, right click and choose Format AutoShapes. Select the Size tab and adjust the width and height for all at the one time.
Click the Draw button on the Drawing toolbar, choose Align or Distribute > Distribute Horizontally to create even spacing between each button. Drag the shapes into the footer area so they are clear of the area covered by the slide content. Click Close Master View to return to your presentation.
Any shape can be configured to perform like an Action button. Add the shape to the slide, right click and choose Action Settings from the menu. You can hyperlink the shape to any slide, Office document or web page.