Htykuut

But using surveyjs i cannot find any solution to add between the radio button.

some working code to edit link2

[1]: https://i.stack.imgur.com/CWQVL.png

  [2]: https://jsfiddle.net/myselfdesai/xeyqca75/

According to my understanding the you are trying to add the sub title between your single group of radio button.

For this you have to manually add the custom java-script code manipulate DOM element. The functionality provided by surveyjs is given below.

survey

    .onAfterRenderQuestion

    .add(function(){

     <add your custom javascript code>

     });

I have added the code with considering basic DOM element position.

survey

    .onAfterRenderQuestion

    .add(function(){

        $( 

        //first I have collected all the div element position of using question form id 

        let divs = document.querySelectorAll("#question_id form div");

        $('</br></br><span><h4> Medical/Dental</h4><span>').insertBefore(divs[0]);

        $('</br></br><span><h4> Nursing </h4></span>').insertBefore(divs[9]);



    });

This can solve your problem remember to add proper div object index to add span for particular location.