Hi I would like to add more 'other' options below the radial dials. Can you tell me how?

Unfortunately, I didn't find a way to include more text boxes in radio buttons.

But you can check this widget: https://widgets.jotform.com/widget/user_contributed_radio_buttons

That will allow your users to input options by themselves, that will pretty much do the same thing as text-box (other option).

Let us know if that can work for you.

Thank you!