Thread:BunsenH/@comment-37135468-20190124153741/@comment-24577221-20190124195002

If you're using the Visual Editor, when you edit the page, beside the "Cancel" button at the top of the editing window is a drop-down list item showing three horizontal bars. One of the items in that drop-down list is "Categories". From that item, you can select each of the categories to edit or delete.

If you're using the "Classic" editor, when you edit the page, on the right side of the page part-way down is a "Categories" item. As you mouse over each of the categories, a tiny "garbage can" icon appears. Click on that icon, and the category goes away.