This is the steps to duplicate a CMS website. The copy can be accessed from the CMS (Content Management System) any time. You may want to duplicate a CMS in order to make edits in the duplicate as a test of what the Live site would look like, without risking changing the live site. Once you have decided if you would like to implement the new tools, color schemes, or features, you just replicate your work in your live website.
Note: Editing the duplicate should not make changes to the original CMS.
Content > Content Management System
Click New > On the Copy From: select the CMS site you want to copy