Main calendar
To manually add the Main calendar to your Google Calendar, follow these steps:
  1. Browse to your Google Calendar.
  2. On the left side bar click on the arrow next to Other calendars, then select Add by URL:

     Other Calendars

  3. Enter the following URL in the field provided:


    Add By URL
  4. Press 'Add Calendar'.
  5. You should now see the Main calendar in your Other calendars list.
Calendars:
School Calendar