I have tried in both the template and the normal PPT version. When I add a new slide in normal mode it seems like an image and I can't change anything on the slide. This tutorial will help you understand some key edits that you can make directly through PowerPoint Slide Master and have them reflect in your entire presentation. PowerPoint: can't edit new slide while it is editable in slide master The slides in the slide master are all editable. To make this process simpler, our tutorial is going to cover how to use Slide Master in PowerPoint in order to make edits in your presentation, quickly and easily. PowerPoint Slide Master allows you to make changes in the presentation’s master slide, which means that you only need to change something there to change it throughout the presentation. What you can do, however, is to use the PowerPoint Slide Master feature in order to add or update your slides and have them automatically reflect in the entire presentation. PowerPoint Slide Master drives the look of the entire presentation. What do you do if you have to place the company logo on each and every slide of your presentation? Or change the font across the whole project at once? Going through it one slide at a time will take forever, and is a long, frustrating process, with a lot of room for errors. When creating your own PowerPoint presentation, it can be a tedious process to make individual changes on your slides if there are elements that need to be modified throughout an entire presentation.