Each user who has Exchange enabled can be granted different access levels or mailbox types (Full Exchange, Web, and POP3). You may change these access levels at any time. Please see the instructions below in order to change the access type for a user.
Note: Downgrading an access type from Full Access to Web Access will also downgrade the current quota limit. This is not recommended as can set the mailbox to full and inaccessible.
4. Now that you are logged in as the customer, navigate to the User List under My users.
5. From the User List, choose the mailbox you need to assign another user access rights to and click on Edit User.
5. Under the Microsoft Exchange service tab, select Access Settings. From here you will need to select the Mailbox Type drop-down to see the three available types to you. Once selected you will see the amount of provisioned licenses to reserved. You will need to ensure you have enough of the license type available before you can proceed.
6. Click Save Changes to finish.