Setting up a bill of materials (BOM)
When to set up a bill of materials
                                                 Changing a bill of materials
                                            To change a bill of materials:
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Open the Bill of Materials window in one of the following ways:
- On the ribbon, from the group on the tab, click Bill of Materials.
 - In classic view, click Database menu > Bill of Materials.
 
- On the spreadsheet, in the Material Class or BOM Desc columns (if they contain information), select Edit Bill of Materials from the shortcut menu.
 
Note: If both an estimate and a standard database are open, the estimate BOM information is displayed initially. You can use the options to switch between the estimate and the database BOM. (If only an estimate or a standard database is open, you cannot switch to the other option.)
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To change a bill of materials stored in the standard database, select the Database option.
To change a bill of materials for this estimate only, select the Estimate option.
 - Expand the Material Classes list as needed.
 - Make changes as needed. You can:
 - When you finish changing your bill of materials, click [Close].
 
Tip: To edit the bill of materials for an estimate, Edit Bill of Materials is also available on the shortcut menu from the BOM description field of the Detail window.
) to a new position within the material class.