select the week for which you want to make a reservation
in the selected day, in the line with the chosen time of visitation, mark with a mouse click the appropriate check box with the type of admission on the right side, the number in the check box shows the number of free places
then click the mouse on the "Book it"
on the next page, fill out your name, surname and email, if you're not logged in
select the number of tickets
choose a method of payment
label the check box "I am not a robot"
click the mouse on the button "Save Your Reservation"