Add a Google calendar

To import a Google calendar:  

Step 1: Go to Setup > Calendar > Open calendar

Step 2: Under Google connection, click "Manage"

Step 3: Choose the property to connect the Google calendar to. Click Set-up Import.

Step 4: Paste “Public Address in iCal Format” Google calendar link. 

Google calendar link can be found by:

1. On a computer, open Google Calendar.
2. In the top right, click Settings (Gear Icon)
3. Click the name of the calendar you want to share.
4. Open Access permissions.
5. Scroll down to Integrate Calendar. 
6. Copy “Public Address in iCal Format”