Setting Up The Snapshot Plugin So It Backups EVERYTHING

How do i set up Snapshot so it backs up everything?

i.e. if I wanted to do a FULL restore in my site.

I'm confused mainly by the setup section - "What Files To Archive?"

There is an option "not to include files" and "include selected files" as well as "common files" but no option to include ALL files.

How do I take a full backup of my site (everything means everything), so I can do a site restore or migrate the site to another host?