If so how is it implemented. I am being told here that you cannot have any children reporting to a Feature and Option and all our top level oder numbers (or modeil numbers) are F&O so we have created double part numbers (one with a BOM and one without) then used the Part number without the BOM as a F&O and structured to it the "real" BoM as a required F&O. Does this make sense to anyone??? We then have all the real F&O (such as country power cords) available for adding to the order. Any explanation of a sane way to do this would be appreciated.