<div class="panel-heading">
  <h4 class="panel-title">Panel Header with Radio Button</h4>
  <div class="btn-group btn-group-toggle my-n1" data-toggle="buttons">
    <input type="radio" name="options" class="btn-check" id="option1" checked />
    <label class="btn btn-success btn-xs" for="option1">Option 1</label>
    
    <input type="radio" name="options" class="btn-check" id="option2" />
    <label class="btn btn-success btn-xs" for="option2">Option 2</label>
  </div>
</div>