approvers e organizations

Hello
I have JSD 3.6.1.

I need only the client request types of organization A to be approved by Organization A approvers.

I've noticed that when I set up a list of approvers in the field that contains approvers from other organizations (for example B C D), the other approvers are also shown.

I do not understand, because it should only appear the approvers of the organization that belongs to the client who opened the requisition !!!

Can you help me.

Thanks
Danilo