You don´t use advanced rules?
I have created my own national rules. I would also like to add the U19 pyramid to the system. Do not you know how to do it? I'm trying it for the 3rd day and it's still not working with the promotion / relegation.
I created a database of Gibraltar. League, Cups, everything set right. But I can not set to play a competition reserves and U19. In editor is in "reserve rules" - Reserves - use teams from divisoin.. same U19... and in game is nothing :-/