Thread:JoshuaJSlone/@comment-24833026-20140621191021/@comment-131168-20140621192213

Here's how you can change/remove categories, since Wikia makes it a little more hassle to do that than add them: You have to go in to the Edit view, then on the right side where it shows a list of categories if you hold the mouse cursor over one there will appear two icons: one for modifying it, and one for deleting it.

However, the "Weekly Number 1 singles" category isn't really needed-- that's what Category:Number 1 Singles is, though it doesn't specify weekly. LOVE Machine is then part of it by the Category:1999 Number 1 Singles, and others use similarly named categories for other years.