Thread:CarbonApt/@comment-26397550-20180209230842/@comment-26397550-20180210140714

No, it's a category to organise subcategories that relate to catalog pages, but not for catalog pages itself.

It'd probably be preferred if you didn't go around adding categories manually to pages unless you are sure it is supposed to apply. Check the category page first and see what the usage is. Or, if the category doesn't exist, it's probably not needed in the first place.