I would like to know how one would set up a BOM where the sub contractor would use his own parts as well as our parts that we supply to him.
The part that the sub contractor manufactures can also be supplied by a different supplier and does not necessarily have to be made by the sub contractor.
An example could be a steel cabinet which has doors. We could supply him with the cabinet, nuts and bolts, hinges. The sub contractor then has to manufacture the door and attach it to the steel cabinet so that it now has a door.
The other issue is that we could also supply him with a door and the rest such as the cabinet, nuts and bolts and hinges to complete the steel cabinet.
How can this be set up and also how would MRP know what to order?