If you are using the default MashZone NextGen User Repository, MashZone NextGen administrators can add users, assign them to groups to grant them permissions for various actions, and otherwise manage users in the Admin Console to. See Create users and Edit, assign roles and other user management tasks for instructions.
If you have configured MashZone NextGen to use your LDAP Directory as the User Repository, you mange users and groups in LDAP and assign permissions in MashZone NextGen. For details, see Edit, assign roles, and other user management tasks and Manage user groups.