I have been making it a practice to put the categories above the profile, but when first creating a profile, the biography caption isn't listed in the biography section so the category automatically appears under the bio caption the next time you go into edit and has to be moved above it. I guess it's just better not to put the category in until after the profile is created and saved once. A small matter, anyway. One that just confused me a little at first. Now I've figured out how to work around the slight technical difficulty so it's no problem.