with your invoice attached.
NB: The deadline to register is February 8th, as we need to calculate the final price for the sessions, which is based on the number of people.
Please note that you need to pay the full price, even if you cannot come to all sessions. It is not possible to pay only for half of the sessions if you cannot join every scheduled session.
Actually this is the situation of most people, there will always be absences between their holidays, business trips and other obligations.