You can change the size of a slide in your PowerPoint presentation through the "Design" menu on the Windows PC, Apple MacOS, ...
Now let us see these steps in detail. On the Selection Pane, hide every placeholder on the first slide. Close the Selection Pane. Go back to the Slide Master tab and click the Background Styles button ...
Your options for editing PowerPoint templates look fairly similar whether you make them on the desktop or web version of ...