OSB (Oracle Service Bus) Consuming Services internally - how to document this in Centrasite ?

Could someone clarify for me, how it in Centrasite is meant to document that a webservice exposed on our OSB (Oracle Service Bus) is consuming one or more webservices, that might also are exposed on the OSB.

In our goverment process, we are strugling to document who is consuming webservice/operations and who are the providers - for us to be able to govern our webservices.

How are you doing this - let me hear from you.

Br. Jan