Calendar sync is available on some Event Temple Subscriptions. If it is available to you, you'll be able to link it by Clicking on Calendars on the left-hand side of Event Temple, then Select Booking Calendar from the drop-down. Press the Sync Calendar button and follow the prompts to connect.
If is not available on your subscription, please reach out to a system administrator or our friendly support team & we'll be happy to discuss subscription options!