Add new account:
Visit the Availability page or click this link and go directly to step 4.
Click on the "Connected Calendars" tab.
Click on the "Add a calendar account" button.
On the Google Calendar section click on "Connect"
A popup will appear where you have to accept some permissions.
Once you accept those permissions you will be redirected to the availability page.
Check for conflicts:
Set the calendar(s) to check for conflicts to prevent double bookings.
Click on the "Edit" button on the "Check for conflicts" box.
You will see a list of all the calendars you have access to.
Select the calendars you want the system to check for conflicts before adding an event to your account.
Add to calendar (select main calendar):
Set the calendar you would like to add new events to as they’re scheduled.
Click on the "Edit" button on the "Add to calendar" box.
Select the main calendar account where we are going to add the events to.