How can i Configure my Trix Editor / ActionText field?

Is there a way to add / delete buttons from the tool bar for action_text? For eg, I'd like to add more semantic header levels (h2-h4).

I made a start with this, adding h2, h3 and underline elements. I don't know if this is the right way to do it but:

https://stackoverflow.com/questions/58805984/add-buttons-to-rails-actiontext-toolbar/58807418#58807418

Had the same problem, your solution helped me a lot. Would be cool if there was a better way to edit the toolbar of trix.