You can choose to duplicate an Existing Page (only pages already using Divi Builder will be available) to modify as a starting place or choose “Basic Page Elements ” from the Your Saved Layouts tab. The Basic page template includes the top introductory text row, optional large image (photo or infographic in the 1200 x 642 proportion (880 px max width and centered via design tab), rows for text with left side image, full width text and quote styles. It also includes some of the other common section and row designs.
The elements you don’t need can be removed and others added from the library to build the layout most suited for your content.
It also includes the 3 column “Next Steps” section that should appear on most pages.
If you load an Existing Page because it most closely mimics the format you need you can just click the X on the left to remove rows that you don’t need. You can add any of these row types back by selecting Add Row and then Add from Library.