That must be the problem. When I click on "Format" in the section, all it shows me is "Divider". I can turn on a divider or turn it off. There's nothing else for me to click on. I hate being a newbie, but Squarespace looked so easy. I have to be missing something.
Now, if I add a new blank section, that menu is there. The type of section I have now must be static.