Add a shared Office 365 calendar in Outlook for Mac (2016 or greater)

  • Open Microsoft Outlook

  • At the bottom of the navigation pane, click the calendar icon

  • On the toolbar, click Open Shared Calendar

  • In the search field type in the name of the calendar you wish to add

  • Select the calendar from the search results and click Open

  • Within a minute or two, the calendar will appear in the Shared Calendar section on the left