When you create a new activity, you can indicate in the Booking settings, in the field "Bookable up to", how many hours before the start of a session a booking can still be made.
Furthermore, you can always change this activity setting afterwards:
- Go to Activities
- Click on optIons (3 dots) > Edit of the relevant activity or on the image
- Scroll to Booking settings
- Go to field "Bookable up to"
By default this is 2 hours, but we recommend making this shorter if the lessons or training sessions are crowded.