Changes to the master slide will apply to all slides.
From this slide, you can add, edit or remove the footer in PowerPoint. Select the “Master Slide” or the first slide. To edit the footer in PowerPoint, click on the “View” tab. Does that mean, you can’t edit the footer in PowerPoint? Well, you can! I know the feeling! You try clicking, double-clicking, and everything else that you know, and you still can’t select the elements in the footer! It is really annoying, to say the least.