Confluence 5.7 has reached end of life
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All users who don't log in when they access Confluence are considered 'anonymous'. You can grant anonymous users the 'Use Confluence' permission via the Global Permissions screen if you need to. This will allow non-registered users to access pages and spaces in Confluence. A space administrator can further control anonymous access per space via the space permissions.
To add a new group:
You're now ready to start adding users to the group.
To delete a group:
Granting the Confluence Administrator permission to someone allows them access to many, but not all, options in the administration console ( > General configuration). Expand the comparison table to view the options available to people granted the Confluence Administrator permission, and to those in the confluence-admin group.