The Los Santos County Sheriff's Department takes responsibility for Custody matters, but only for parole at this very moment. Also, I'm not sure if you can recall this faction a Peace Officer Agency. You'll need this to be granted by the Faction Team which I do believe that is not going to agree with this because we already have two POA's. Sometimes, we shouldn't forget that this is a game and yes, the whole point of it is to portray the real-life, but not to copy it. And also, if you're implementing so many things, people aren't going to have fun anymore. It'll be just about which protocol do you use in X situation.