Adding Shared or Room Calendars to Outlook

This article goes over how to do this in Classic and Web Outlook. Classic screenshots are first followed by the web/new Outlook screenshots. 

1. Classic: If you are adding a room calendar it is best practice to create a new calendar group by right clicking on My Calendars and selecting New Calendar Group. Name it "Asia Society Rooms"
   Web/New: Click the three dots to the right of My Calendars and add New Calendar Group
   
            
   
   
2.  Classic: Right click on the calendar group and select Add From Room List.
   Web/New: Click the Add Calendar Button.
   
        
   
   
3. Classic: Select the calendar you have access to, like a Room calendar or a user's calendar that you know you have access to. 
   Web/New: Select Add from directory on the left hand side of the Window that comes up. Select the account (your account) you want to add the calendar to. Choose the email address you want to add by typing it in, or searching. Choose where you want it in your directory.