It depends on weather you are using two categories ie Sporting goods and Collectables. If your using both, then you have to do the sporting goods category first, so sporting goods, cycling, bike parts, bmx, vinatge parts, then list it in collectables.
If you do it the other way round ie: collectables then sporting goods you dont get all the sub categories in the sporting goods section
I went through it a while back and ebay told me how to do it
