Via Website
Go to https://hktc.co.uk and click the Booking tab.
You'll be asked to sign in if you haven't already, use the same credentials as when you registered with Clubspark.
Navigate to the day/time that you want to book for for, hover over it and click.
Select the end time and click "Book now".
You'll get a confirmation screen and an email.
You can see you existing bookings via My Bookings
If you need to cancwl a booking just click Cancel on this view and confirm.
If you have exceeded your booking limits you'll receive the following message when you try to book another court.