Does anyone have experience of buying configured parts?

We configure our products and the electronic cabinets are assembled by suppliers.

The configuration of our end product defines what the electronic cabinets will contain, however we only buy on a top level and send the structure of configured purchase parts from the configurator and not IFS. The configurable nodes are not in IFS.

How would you set it up in IFS so that we can see the structure in the purchased part?

Like package parts that we sell but on the procurement side (customer/purchase order see top level, but IFS knows what´s below).