Go to “Other Calendars” and click on the ‘+’
Click on ‘From URL’
In the ‘URL of Calendar’ box, put this: https://calendar.google.com/calendar/ical/c_vc3bt0esuuu0lvtel1icvjodqk%40group.calendar.google.com/public/basic.ics
Click ‘Add Calendar’
Open the Calendar application
Click on File -> ‘New Calendar Subscription’
In the ‘Calendar URL’ box input this URL: https://calendar.google.com/calendar/ical/c_vc3bt0esuuu0lvtel1icvjodqk%40group.calendar.google.com/public/basic.ics
Click ‘Subscribe’ and then click ‘OK’