Google Apps super admins now have the ability to designate users as admins for specific organizational units. Users in a domain can be arranged in organizational units to better control the services and features they have access to.

Editions included:
Google Apps for Business, Government and Education

For more information:
http://support.google.com/a/bin/answer.py?hl=en&answer=182433
http://support.google.com/a/bin/answer.py?hl=en&answer=172176

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