Placeholders, Design Template, and Opening a Presentation
Design templates in PowerPoint are slides with the background and colorful designs already formatted. Simply add the text and layout to the slide. Once you select a template, every slide in your presentation will have the same look.
It's a good idea to start with a design template and then create your presentation. If you have already created a blank presentation, you can easily apply a design template to that presentation. Open your presentation, choose FormatApply Design Template, choose a design, and click Apply. All of the slides will have the same design.