User blog comment:Baristar/Grauen, The Cursed Puppeteer/@comment-22636720-20160518074652/@comment-9155327-20160518102003

in the edit screen, below add features and media, there is a tab called Categories. Under Categories there should be a list. beside each item is a trash can button. thats the delete. to add a category just type the category you want to add in this case "Custom champion" there should be a list that appears below as you type and just click the item