How to implement decentralization + trust in the following scenario
An organization A wants to set up a Hyperledger network using which organizations 1,2 and 3 can transact which each other in a decentralized way with trust and company A wants to charge a commission on what every "value" transaction that takes place between the three organization. and only company A should be allowed to add and remove an organization basically company owns the network but it is decentralized and can be trusted by organizations 1,2,3.
So what should be the configuration of the network to implement this scenario? i.e
1) What role should the organization A have? what should the organization A need to have to own the network?
Last but the main question- is it possible that a 3rd party organization makes and owns a network and charges commission at the same time keeping it decentralized and trusted for the participant organizations.