The recommended and simplest way of submitting a form in Design Studio is similar to the way you submit a form in an ordinary browser: First fill in the form and then click the form submission button.
To fill in the form, you can use the following actions:
Select Multiple Options
Select Radio Button
and to submit the form, you can use the Click action.
You can also loop through field values (text input) options or radio buttons by using the following actions:
Loop Field Values
For Each Option
For Each Radio Button