Just for this episode, maybe. Here's Galu's 'Sitout History'Ep1 RC (Not chosen for challenge):
Brett, Dave, Kelly, Laura, Monica, Russell S.
Ep2 IC:
Monica
Ep3 RC/IC:
Eric, Shannon, Yasmin
Ep4 RC (Not chosen for challenge):
Erik, John, Yasmin, Brett, Kelly, Laura, Monica
Ep4 IC:
Shannon, Dave, Laura, Russell S.
I think they just sat out the people who played in the RC + 1 other person