If you have a presentation, and you don't want to show certain slides, you can skip or hide the slide.
Skip from Editor
From the editor view, select the More option that appears when scrolling your cursor to the right of the slide. There, you'll see the Skip Slide button and can set this ON/OFF:
In the editor, skipped slides will have a banner at the top of the slide:
Skip from Organize
From the Organize view, right-click your slide and select Skip Slide from the menu. Skipped slides will have a Skipped Slide icon at the top left corner of the slide thumbnail: