I just upgraded from Movie Studio 15.0 Platinum to 16.0 Platinum. I used to be able to make templates that I used for adding text to my videos. The was some pre-entered text as well as location and shadow data. I created the template that I wanted and then saved it. The new template/preset would show up in the list of Media Generators after I closed the project and re-opened it.
I can no longer do that with the latest version of Movie Studio. Or at least they don't show up anywhere that I can see them.