How to Add Mailboxes
It is possible that for your work you will need to see other people's or projects' mailboxes. This is quite simple to implement, however you will need permissions from whomever "owns" the account to actually see the requested folders.
To add a mailbox within Outlook
Click on Tools.
Click on Account Settings....
Highlight the Exchange account and click Change...
Click on More Settings ....
Click on Advanced.
Click on Add....
You will then need to type in the name of the account that you wish to have access to. If you do not know the exact name type in the first few letters and click OK. You will receive a list of the accounts that begin with those letters (just like the Global Address List). Click on the account you wish to see.
Click on Apply.
Click on OK.
Click on Next.
Click on Finish.
You should now be able to see the account in your Outlook Folder List. Click on the folder and it should open if you have the right permissions. If you do not, you will receive a message saying that Outlook is unable to display the folder.