How to change portrait orientation in the PowerPoint app. 1. Open PowerPoint on your Mac or PC. You can open a presentation you already started or create a new one. 2. Navigate to the "Design" tab. 3.

Microsoft. You can change the background to anything you like if you're using Powerpoint to create presentations: a picture, a color, a gradient, or even an in-motion video. You'll know the best ...

To change the background of your PowerPoint slides to one of the four available options, start by right-clicking a slide or going to the "Design" tab in the top menu bar.