slide navigator
The slide navigator shows thumbnails of the slides that make up your presentation, and appears on the left side of the Keynote window in navigator view. When you play your slideshow in a window, you can click in the presenter display to open and close the slide navigator.
You can click thumbnails to jump to specific slides, drag them to reorganise your presentation, or press the Down Arrow or Up Arrow key on your keyboard to view the next or previous slide.
To show the slide navigator, click View in the toolbar, then choose Navigator.