Hello Monique,
That is not possible. We, Hellas Utrecht, had the same problem.
You can first have all athletes register as reserves. Once registration is closed, you can first allow your own athletes who have registered before a certain date and then add all other athletes in order of registration. The (Excel) document with registrations will state the date and time of registration.
See also our text for the Hellas Christmas Tree Multi-Event 2018 on December 15, 2018.
Barbara Nierkens
This has been automatically translated into English