In the calendar, you’ll see that all bookings have different colors and symbols. An unpaid booking, regardless of the type of booking, will have a red “unpaid” marker. If you want more information about how the customer or customers have paid their shares, you can click on the booking to view the information per customer per booking. 

See more here: https://court-admin.kb.kundo.se/guide/video-guides-admin-calendar?category=admin-bokningar