A user is any individual who accesses Confluence.
New users are created by a site administrator via the Administration Console.
A site administrator can also group users together into user-groups for more convenient administration. This means that any security permissions you assign at the site, space and page levels can be assigned to a whole group. A user in one of these groups will automatically be granted all permissions granted to the group.
There are two special groups in Confluence:
Anonymous-Users
Confluence treats all users who do not log in when they access Confluence as being 'Anonymous'. Administrators can assign permissions to this group separately.
Space Permissions Overview
Viewing Space Permissions
Assigning Space Permissions
Page Permissions
The Administrator's Guide to User Management in Confluence
Take me back to Confluence 2.6 User Guide