Once you’re happy with your setup, save your template and exit out of PowerPoint. RELATED: How to Create a Custom Template in PowerPoint Here, you can customize the fonts, headings, colors, text and image box placement, and more. The Slide Master will appear in the left pane. To access the slide master, click on the “View” tab and select “Slide Master” in the “Master Views” group. Once you’re finished with that, it’s time to open PowerPoint’s Slide Master, which is where the rest of the customization will take place. Now, with your blank presentation ready, go ahead and select the slide orientation and size, which you can do by choosing the “Slide Size” option in the “Customize” group of the “Design” tab. You can do so by opening PowerPoint, selecting “New” in the left pane, and then selecting “Blank Presentation” from the template library. To get started, go ahead and open a blank PowerPoint presentation. Creating a custom template in PowerPoint is quite easy.