If your item bubbles are driven by the BOM, you will have to make the item bubble balloon text "Custom" instead of "Item Number".
I've done it the way Arlin has and it works fine. I have also hidden the components within the drawing view, but this can eventually made your drawing file large, especially if you have multiple sheets pulling out details.
I favor adding my 2nd sheet, inserting the actual part, and detail it just as I would if it were a detail machine drawing. I change my item bubble to a color that stands out (like red if all your bubbles and notes are black). Also set my BOM properties to reserve row numbers for missing components, so when the BOM updates, I don't have to change my item bubble number. But the red color is a good indicator to verify it. This works great for weldments, since we have a job shop do all this for us.
Hope this gives you the option you were looking for. Good luck!