Duplicating A Pages Design
Log in to the backend of your Tent Apps website
On the left side of your dashboard click on "Web Pages" or "Pages"
Click the "Add New" button at the top of your screen
Give your new page a title
Click on "Use the Divi Builder"
Once that uploads you will see three options
Click on "Clone Existing Page"
Select the page you are wanting to duplicate from the list of "Your Existing Pages"
That will clone the existing page to your new page
Now edit your new page on the backend or click "Build on the Front End" to see the page as you are editing.
Once you are finished editing your new page, don't forget to save it and publish it before you exit.