Don't forget to check CC app console output once race is started, it will print what it considers classes in this race - will save you a lot of troubleThanks for the link of the tutorial @The Iron Wolf
With it I might apply the system for Group C1 and C2 in a LeMans race 1988.
As GROUPC already existed and couldn't be used for separating C2 from C1, mapping them to LMP1 and LMP2 finally did the trick.
All this keeps hidden in the json file, so no matter the mapped names as long as the aim is positively reached !
I also read it in the tutorial ... and that's what helped to correct my first mistakes as of course it didn't work at 1st timeDon't forget to check CC app console output once race is started, it will print what it considers classes in this race - will save you a lot of trouble