Hello -
What exactly do you mean by “hierarchies” ?
Without this knowledge, I will go ahead and say that XI3.x security is fairly complete and accommodates myriad permission and access level matrices: almost anything’s possible, as they say.
Give a look towards: XI 3.0 Security for Mere Mortals
It’s an excellent reference for the practical uses of the security model.
Atul Chowdhury (BOB member since 2003-07-07)