By default, your presentation is set to advance when you click a slide. You can set the presentation to advance only when you click a link, or to advance automatically with no user interaction.
You can also set your presentation to start playing automatically when the Keynote file is opened.
Click the Document tab at the top of the sidebar on the right.
If you don’t see a sidebar, or the sidebar doesn’t have a Document tab, click
in the toolbar.
Click the Presentation Type pop-up menu, then choose an option:
Normal: Advances when you click or tap a slide.
Links only: Changes slides only when the presenter (or viewer) clicks or taps a link.
Self-Playing: Advances automatically, like a movie, with no interaction needed. Self-playing presentations are useful, for example, in a kiosk setting.