1. In Outlook, click on ‘File’
2. Click on ‘Add Account’
3. In the new pop-up window, please type in the email address you want to add to your Outlook and then click ‘connect’
4. Enter the password that is associated with the email address and then click ‘Sign In’
5. Click ‘Done’ when you see the ‘Account successfully added’ box.
6. Then close and restart Outlook. When Outlook restarts you should now see the added mailbox in the left-hand folder tree, you may also see any additional shared mailboxes that the account has access to.