Are you an organization registering an athlete because the athlete is unable to register themselves or because online registration has closed? If so, you can send the athlete a payment link so they can easily pay online themselves.
After creating the athlete, go to the athlete and edit the registration.
Click on "Show registrant & payment details" at the top.

Then select the payment link, it will be automatically copied for you, so you can easily share it with the athlete, so he/she can pay online.
Note: this only works if you as a competition organization accept iDeal as a payment method (via the right drop-down menu --> "Online registration settings").
This has been automatically translated into English