Open: Estimating > Records > Enter New Estimate - Full | Additional Details.
To link purchase orders (raised to meet this estimate's demands) to one-off works orders, select the Linked check box. The box is clear, by default, but subsequently will be either selected or clear, depending on your last selection.
If you select this check box, then any associated orders raised will only be used to meet this estimate demand, not for any other purpose.
Note: You must select Allow linked under MRP on the Stock Item Manufacturing tab for MRPMaterials Requirements Planning (MRP). MRP recommends purchase orders, transfers and work orders to balance supply and demand. to raise linked works and purchase orders to the works order created for the estimate header.