iClosed Calendars is the page where you can connect your personal or work calendars with schedule, so events, availability, and bookings are in perfect sync.
You'd want to connect your Google account so you can:
get updates about your new bookings in the calendar connected
iClosed can check for availability conflicts with the calendar connected
send email reminders from your Outlook when Host email is selected (that you can set up in Event Notifications and Workflows)
You can connect the Google Calendar from:
AI Scheduler → Calendar page or from 
Settings → Calendars pagefrom
Integrations page
But bear in mind that Google Calendar integration works on a user level, meaning every user would need to connect their own calendar with iClosed account.
Go to
AI Scheduler → Calendar Click on 'Connect Google Calendar' button
You will be redirected to choose the account you want to connect
Select the account and grant all the necessary permissions
Pro Tips
As you may know, we're offering Outlook calendar integration as well - check out the article about it here.
You will be able to connect only one main calendar where events will be stored from iClosed. Additional calendars can be included for conflict checks, and it can be Google or Outlook both.
Learn More