There is an update by @Foxeway for he Rainmaker version with 24 pits.Thank you for your reply.
the first one:
EKO Sim-Racing Neil Shaw fixed - Updated by CrisT86
has 28 pits (which is enough for the league I am creating).
Rainmaker's layout is the one I already had with only 21 pits but I know that for this layout there is an update with 1 more layout with 32 pits.
thank you very much
"Pukekohe Park 2013 by R1CHO and Rainmaker -> pits extended from 21 to 24 (sorry about this one being only +3 pits, had some troubles)"