Who has knowledge about Cost Group Accounting?

Hi,

I have to admit, that I have no experience with Cost Group Accounting. 

But I want to know if it is possible to customize the process of building the expense account of a receiving transaction.

Out problem is that we can fix account and subaccount of a purchased item via inventory category -> cost group -> expense account. But we want to decide for every special purchase order the cost center. And it would be great if at the moment of receiving the expense account combination from cost group could somehow be completed by a cost center that comes form any field of the purchase order.