Italian to English Bus/Financial

I'm translating a document entitled: la ricezione, esecuzione e negoziazione di ordini relativi a strumenti finanziari, and there are two types of "rapporti" (which I presume are accounts/portfolios): rapporti amministrati and rapporti di gestione. They are different kinds of account and only certain bank personnel are authorised to process orders for "rapporti in gestione" whereas all banks staff are allowed to deal with the "amministrati" ones.
Can someone explain the difference?? (I would rather understand it than translate literally).
Thanks loads.
Denise