Then the instructions should definitely work, as I did the step-by-steps to create them using Word 2016. I like the hollow square of Wingdings best because it's got a bit of visual weight to it, like a bullet should. There are other options, too, and if you end up wanting something that floats a bit more lightly on the page I can suggest the Symbol font, character number 240.
Brian - Windows 10 Home, 64-Bit, Version 1809, Build 17763
Explanations exist; they have existed for all time; there is always a well-known solution to every human problem — neat, plausible, and wrong.
~ H.L. Mencken, AKA The Sage of Baltimore