You are welcome. It took me a while and I had to go into Safe Mode because I long ago changed my Word setup so that Body Text is the default style and it is not based on Normal. I included it in the Styles Gallery when I first installed Word 2010 and 2013.

Yes, it is complicated. A big problem with the Ribbon Styles Gallery is that people (understandably) assume that what shows up in that gallery are all of the Style. It is a handy tool. I especially like that it gives you a preview on mouse-over, but the Styles Pane (which you used to do the modification) remains the workhorse for using Styles.