All Sites is a special site for organizations that have multiple sites defined within their system. A site could be a physical location but is used as a security boundry.
When creating a new record, for example, a document. You will have the option to choose a site from the site drop down list.
By default, all users within the system has Read-Only access to all items listed under All Sites. Anyone marked as a global admin has full permissions to all aspects of QMS Navigator.
Users who are designated as Global Admin can modify any record in the system.
Notes:
When creating new users, the All Sites site is added to the user with Read-Only permissions. The QMS Administrator can modify or remove this site. Therefore, it is possible to not only remove All Sites from users, but you can also give users read/write access to All Sites.