If you would like to import the details of a booking session into a calendar such as Google Calendar or Apple Calendar you can follow these steps.
After your client confirms the booking you will receive an email. Open that email and click the Add to Calendar link to download the calendar file for that booking.
Import that calendar file into your Google or Apple Calendar. If you aren't sure how to import that this website can guide you through that process: Import ICS Calendar Files to your calendar.
The Download Calendar File link will also be shown on the Session Spot Details page for that session. You can find that by going to Studio & Clients » Booking » Sessions, click on the name of your session then click on the booked session spot.