How to add the "MC Calendar" to staff Outlook app on a Macbook. Using the New Outlook.
Click Calendar icon to open the Calendar module

Click "Add Calendar"

Click "Add Shared Calendar ..."

In the pop up window enter the name of the Shared Calendar you want to add, in this case it'll be "MC Calendar"

Select "MC Calendar" from the list of Shared Calendars

The calendar should have been added to your Outlook, search down the LHS panel to find the calendar and click the radio button to select.

The list of calendar events may take a few minutes to populate and show in your Outlook.

Steps may differ slightly in the OLD Outlook or different versions and on different devices.