1. In Outlook, go to File.
2. Click on the Account Settings drop down and choose Account Settings
3. Click on the Data Files tab
4. Click on Settings...
5. Click on the Advanced tab
6. Click on the Add... button
7. Type in the name of the project in the Add mailbox field
8. Press Ok, OK and Close buttons until the outlook boxes are closed.
9. Scroll down in the list of folders on the left to see the added mailbox.
10. Expand the mailbox to see its Inbox and other folders. If an error is received, contact the mailbox or project owner to ensure the owner has shared the mailbox with that user. Bryan Biondo is also a good resource for any permission questions.