This is the place where you can manage registered users. Only permissions are managed in different several screens.
Administrator can manually add users.
The list can be filtered on username (use * as wildcard), group or status. The list can be order by registration date or username, in ascending or descending order.
This screen works be managing several users at once on different actions :
The target is the set users selected (by default) or all users is asked.
Definition of adviser user:
It's possible to assign adviser mode with variable $conf['allow_adviser'].
If this variable is 'true', it's possible to define user like an adviser