choose the course marked with "I" and 1/8 (i.e. the first lesson of the course), click on the 1st lesson and book the lesson or full course, see below
click on a lesson to select"Book a lesson"
click on the 1st lesson of the course (1/8) and select"Add to Basket"
click on the 1st lesson of all selected courses and select the "Add to basket" button, the discount will be calculated in the basket
click on the lesson and choose "Cancel" or use "My profile" (click on your email in the top right and select "My profile" from the menu), where you will see all your reservations and you can cancel or change reservations for lessons, courses and rentals
you must first log out of the missed lesson and then log in to the substitute lesson, use "My profile", see above
More information about using the reservation system can be found on the page "Reservation system rules".
TIP: clicking on the square in the upper left corner will open a rez. system in full screen display (in a new window)