When someone invites you to collaborate in SparqFest, you will receive an invitation with a 6 character invitation code if you don't already have an account with that festival. In most cases, you can simply click the “Accept Invitation” button in the email and that will guide you through the process of getting an account setup with SparqFest.

You will be asked to login with your Google ID or Apple ID and then presented with an “Accept Invitation” dialog that includes your invitation code. Once you accept the invitation, you will have access to the SparqFest Creator Portal for your festival.

Invitations are good only for a period of two weeks. Once you accept an invitation, you no longer need that code.