By following this tutorial, duplicating your landing page or website can be done easily.
1. Click on the Builder tab to the left and then click Website.
2. Click on My Sites and hover to the site you want to duplicate.
3. Click on the Duplicate icon as shown in the image below.
4. Start editing your new site
5. To change your site name, click on Domain Settings on the left.
6. Select the domain you want to edit from the drop down and then enter the new subdomain name and save.