This diagram illustrates how the JD Edwards EnterpriseOne Homebuilder Management system uses national purchasing. First, you set up national purchasing areas, communities, and phases. Second, you decide whether the national purchasing is for takeoffs or bids. If the national purchasing is for takeoffs, you set up national commodity items, assign national commodities to item master records, and set up national purchasing material item pricing records. Then you generate the lot start workfile and review the records. If the national purchasing is for bids, you set up national purchasing bid master detail records. Then you generate the lot start workfile and review the records.