1) Open Microsoft Outlook if it is not already open.

2) In your Mac's menu bar, click File, point to Open, and choose Other User's Folder.

3) Search for the mailbox that contains the calendar that you want to open. You can search by using the name of the mailbox or the email address.

Once you've located the mailbox, click it once to select it. Then, click the Open button.

Outcome

The shared calendar will be displayed in your list of calendars.