Slide layouts are predefined arrangements for your slide content.
Add a slide
1. Open or create a presentation. In the navigation pane, click the + icon, or
2. On the toolbar, click New.
3. Select the layout type you want from the New slide screen.
Change slide layout
1. Right click on your slide in the navigation pane on the left, or right click on a blank area in your slide.
2. Select Layout, select your preferred layout.