How do I add a shared mailbox/shared mailbox to my Outlook?
Open up Outlook and click on Filer in the top left corner (1).
Click on the Account settings... (2).
Click on the Edit... (3).
Select More options (4).
Click on the tab Advanced (5). Click on the Add... (6). Enter the email address of the mailbox you want to add (7) and click OK (8). Then click on OK again (9).
Click here Next (10).
Click here Done (11).
Click here Close (12).
Close Outlook by clicking the red cross in the top right corner and then open it again.
The added mailbox will now be visible.
English 
Dansk