jlbmech,
I think you will have to use a spreadsheet for this, as the automatic BOM is not editable (at least up to V15).
No doubt someone will correct me if I'm wrong.
Go to Insert > Object and select Excel Spreadsheet with the Create New option.
This will embed a spreadsheet into your drawing that you can edit as required.
One tip here - in earlier versions of SE it was very difficult to increase the visible row/columns once the sheet had been created and cropped. What I do is put some data in a cell with a row/column position much greater than you will ever use. You will then be able to crop and re-crop if necessary.
eg. if you think your data will only extend to say cell H10 then put a character in cell P20.
I'm on SolidWorks at the moment so I'm not up-to-date with how latest versions of SE work. Apologies if some of my info is no longer valid.
The REALLY good news is I will be back in Solid Edge after next week -- Yipppeeeeeeeee !!!!
bc