If you want to pre register a player you can follow these steps:
1. Go to the service you want to pre register a player in
2. If a player is not in the Age group then you can add him by clicking on Add member. When you see him on the left side of the screen then you can drag him over to the right
3. Then this pops up, if there is supposed to be a discount then you can add that in there.
Now does the player have an unpaid invoice on their Sportabler account that they or their guardian can pay