I've searched long enough for this, now to ask. How do I combine two part numbers (items 5 & 6) in a BOM? They are separate files for the same part. It is for heat shrink tubing, and I just grab whatever someone has made before to fit around a connector. Normally we cheat, and exclude one from the BOM, and manually double the quantity of the other. Is there a correct way to do this?

Also, why do two of the parts have brackets around them in the BOM ?