Delegation allows users to permit other Exchange users to view and send email and calendaring information on their behalf, allowing, for example, an assistant to answer invitations on behalf of a supervisor.
Note: When delegating or adding users to share your information, search and select the UARK username of the person or group you wish to share with.
Adding Another User's Mailbox
Your account must already have been given delegate status by the user whose account you are accessing. The delegate must be in the Exchange Global Address List.