DIVI4

From your WordPress Dashboard, go to Pages > Add New.

Enter the Title of the page you need to create. Click to use the Divi Builder and choose a Premade Template

In the Load from Library modal that pops up, click the “Your Saved Layouts” tab and select the new layout from the list to load the new layout.

You can then edit the content via the visual builder on the back end or the front end.

Repeat this process for each new page, adding a new layout to each one.

You can watch more about Layouts Portability here.

DIVI5

To create a page, go to Pages > Add Page. 

Name your page and click Use Divi Builder to enable the Divi 5 visual builder.

You’ll enter the Divi 5 visual builder.

Click on the blue plus button and choose Saved Layout, and choose the template layout from the option on the next stage.

On the next step you will also have the option to duplicate your existing page (2).  This is handy if you want to copy the page to include  the whole content of the page you have edited.

Choose the layout that you wanted to add to your page and then edit it.

Repeat this process for each new page, adding a new layout to each one.