Change / add function key assignment for styles

How do I change the function key assignment for Styles?

There is an old post with an answer but the answers are just broken screenshots.
The documentation and posts talk about keyboard shortcuts which control app functions, but not style function keys.

I just want to add a function key to a new style or change the existing assignment.

Sorry for the very basic question.

If you drag the style upwards in the left sidebar to one of the nine positions that have keyboard shortcuts the new style should get a shortcut.