To add a new category to a page you can click the Category button at the bottom of the page and type in the name you'd like your category to be called.
A full list of existing categories can be found at Special:Categories.
This is default category.
Pages in category "Browse"
“ A weapon can be outfitted with one optics module and at least one other weapons attachment. You...
Weapon Optics and Attachments
“ Daybreak Cash (or Battle Cash for PlayStation 4 version) is Daybreak Game Company PlanetSide 2...