1. Right-click on your email address and select "Add public folder to Favorites".
2. Expand "All Public Folders" click on the folder you wish to add then select "Add Public Folder" at the top
   
3. On the right-hand menu select "People"
4. Expand "Public Folders" and select the folder you just added
5. You should now be able to find and edit shared contacts, and contact lists