For the people that want to play for regs that are in tnwl and your reg isnt, then all you have to do is be in the tnwl regs roster at the beginning.
In this case, before the Group stage of said regiment.
Well what that means is at the beginning of the season when the rosters were submitted, not just before a group stage, that would cause such a ridiculous loop hole and be totally unfair to the regiments playing first lol.
Anyways, I'll talk to Jorge about this rule and any updates will be posted to the thread.