Direct punchout from iPrcurement with different catalog

Hi,

The requirement of our client is to have two separate catalogs available for users when punchout is used for a supplier. The supplier has provided us with two sets of credentials that we can setup for content zones. The issue is the client wants to use just one iProcurement responsibility throughout the organization. Even though we setup two content zones (for the same supplier) with different credentials, how can we restrict the users from not accessing the other catalog by using the same iProc responsibility? The solution we initially thought was to create a separate iProc responsibility and create a