To Subscribe Events, login as Staff User, and go to Dashboard. On the lower leftt hand side of the Calendar, you'll see a 'Subscribe to Calendar' link.
Hover your mouse on that link and right click, you'll see selections' list, choose and right click on 'Copy Link Address'.
On your Google Calendar, right click on the down arrow in 'Other Calendars' and select 'Add by URL'. Paste the link in the field, and click Add Calendar.
You can the view the Calendar subscribed as seen below. You'll be able to see any update or changes made to the Calendar in real time. You will also receive notification email each time an update is added.