How to add a Shared Calendar On Outlook (Desktop and Online)

Outlook Desktop

Navigate to the calendar tab in the Outlook app and right-click "Other Calendars"

Click "Add Calendar" and select Open shared calendar.

From the pop up select Name and find the calendar you would like to add from the Address Book.

After selecting the calendar click Ok, and the Calendar will load within Outlook.

Outlook Online

Navigate to the calendar tab and click "Add Calendar"

Select Add from directory as shown below.

From the drop down select your email address.

Search for the calendar you want to add then select Other Calendars to add it to that Calendar group.

Click "Add" and the calendar will load in Outlook.