Administrators are different from super administrator becuase thay have limited permission on user, courses and content management. This limits can be configured by the control panel.
How to create and configure sub-administrators
Every LMS user can be sub.administrator, to activate him you can edit the user by "user management" area and set level as sub.administrator.
In administration module "Main > Permission > Sub administrators" you can find the edited user..
To every user there are 5 icons that allow to manage the functions, if CMS is also enabled icons are 10.

Configuration : Whit this function you can set specific administrator limitis like:
Menu management : this feature allow to enable to sub administrator only certain functions. FOr example we can create a sub.administrator that manage only course but that can't subscribe users to a course.
User management : whit this feature you can assign only some user to manage and not all the complete user list. (very useful for Area manager and similar).
Language management: Limit language management and translation only to some language available.
Course management : Similar to limit user management but related to courses in watch or manage.
Funzioni relative al Cms : The other 5 features are related to CMS page management, to content, media and news limit for sub administration.