We have a single RFID reader, but driver B of our race was assigned to Team A & Team B as a test. It kept assigning his to his first allocated team, Team A. Aside for manual operations, there doesn't appear to be a opportunity to assign Driver B to team B using RFID. I tried using the lane tags so PCLC might get the hint but nope, didn't work.
Before anyone leaps in 'why is he driving on two teams at the same time' - this was for a charity endurance, so keen to keep the cars going constantly, if someone needed to visit the little drivers room for a pit stop, they could handover and keep any personal stats.
Maybe you could add a 'team' RFID tag or use the 'lane' tags in a future release of PCLC where teams may be racing two or more cars at the same time and sharing them amongst all drivers?