Group Administrator Options - These options are for the ITC personnel to maintain their entities and users.
The Maintain Entities option allows entities to be added and modified. You can also grant users within and outside of your group access to a particular entity in your group.
The Maintain Users and Access Control option allows users to be added and modified. You can also assign users to entities here. When editing a users profile you can see what entities within their group and outside their assigned group they have access to.
