You have to be looter - then Kayden / Roopah ask you if you want to do the free use duties . (so far i found that if your relationship with Roopah is good and if she is making the decisions for you she will just stop you from becoming free-use looter )
The moment they make you choose is probably my only criticism for this update. Roooah/Kayden just ask you - ,, Hey, do you want to assume the free duties ( aka - become a f**k meat for everyone ).'' - And MC can say no or agree with ,,This duties are part of the looter job - so whatever - ill accept them'' ( Just in the previous scene someone tried to convince the MC to do something lewd - and he declined saying its too gross ).
I think Kayden and Roopah must present some serious arguments to convince you to do that step. ( or even make the decision for you - if at that point you messed to many times and they think you are totally useless ). Because as at that point of the game the looks really strange for the MC to say ,, Whatever'' to such a question.