[JPaco54]

I have read 6.3 - Jump-Ball Administration - I have searched the Forum past posts and I am confused a little in the do and don'ts of non-jumpers. I have seen officials not allow players to be shoulder to shoulder, they allow an opponent in between, will not allow an opponent to have one leg extended behind another players or line up behind one another, etc etc. I have not been able to find any rules references that allows or prohibits any of this. I need some guidance here. Thanks in advance!