Superscript in line with text - Upfront

Hi there!

Within a drag and drop text box on upfront, how can I make a single character superscript?

There are icons that I can change to be super or sub-script but none of them are very useful to me in this situation.

Is there a way to add special characters to the symbol list or perhaps superscript in-line? Looking for the standards, registered trademark, and trademark.