Do you provide Staging?
One click full staging is not something that we have in place at the moment, however, you can use the applications manager in cPanel to clone the site if you installed WordPress using the applications manager (or if you import the WordPress install into the applications manager).
Alternatively you can copy the website files/database manually and then update the database so the site works with the staging domain.
We offer a Preview tool, to enable you to view domains not yet resolving to GURU, which can also assist in testing changes before making them live. Full staging is something our developers are looking into.