To do this, locate the folder that houses the page you wish to copy. Be sure to select the folder, not the page (see example circled below in the left navigation).
Click the copy tab.
In the System Name field, type in the new system name for the folder.
Learn more about system names.
Click on the parent folder icon to select a location for the new folder. A new window will appear.
In the new window, select the folder where you wish to locate the new folder (and included) page. Click confirm.
Click the Submit button at the bottom of the form. The green bar at the top of the navigation will indicate that the copy is successful.
Click on the parent folder (where you put the copied folder) to refresh the list. Your new folder and page will show in the left folder listing.
Click the new folder, then select the Edit tab and change the Display Name. This is the label that will show in the left navigation of your website. Click Submit to save.
Click the "index" page inside the new folder and edit.
Learn more about adding content to the page.