The Bill Of Materials Configuration dialog allows designers to setup the BOM table's available content and data grouping.
From the Bill of Materials mode of the Properties panel, click the BOM Info button (Under the Configurations region of the panel).
The following BOM Configuration options are available:
Data Source – Defines which PCB project data files are used to derive the BOM item list – by default, this the current Board design. The alternative Project option will extract BOM data from all design
files in the nominated PCB project.
Grouping Key – Defines which component attribute is used to group BOM items together (in a single row). This is typically set to Comment (and perhaps also Footprint), so that components of the same
type are together.
Users can also Add Item, which adds a new, editable BOM item to the main table of the dialog, or Delete Item for BOM items that are no longer necessary.