There are three ownCloud users defined in this example. One user owns (mediadmin) the media directories and files, and is defined as an ownCloud "User Group Administrator". The user group administrator role is allowed to create, remove, and change passwords for users that are members of the "mediaRWGrp" security group. All users (mediadmin, test, test1) will have full read/write access to the media directories. The other users (test, test1) are normal ownCloud users.