If you're school is already registered to take part in The Big Challenge, go to the 'Home' page of your account. You'll see the details of this year's participation. 

Click on 'Edit your participation'. You'll then see how many students are already subscribed. To add more, just click on the right level and increase the quantity to the anticipated number. You can also add another teacher and fill in the correct number of students who want to participate. Please note, that it is not possible to decrease the numbers - if you made a mistake, let us know via e-mail.

When you're ready click on the 'Validate' button at the bottom right corner. 

You'll then be able to download your registration confirmation at the top of the page including the updated paiment information .