Lessons reservations are available exclusively within a window of 2 to 21 days from the date you consult the schedule. This means you can only book a class that is scheduled at least 2 days ahead, and no more than 21 days in advance.
possibilities are :
Monday 09:30-20:00
Tuesday 09:30-14:30
Wednesday 09:30-20:00
Thursday 09:30-14:30
Sunday 10:00-12:00 & 18:00-20:00