title: Combining countries in a region and displaying it on the same column
body: <p>Is there a way to combine countries into groups and displaying them in the same output column? I don't want to manipulate the raw database.</p>
  
  <p>E.g. </p>
  
  <ul>
  <li>Austria          10 </li>
  <li>Belgium          30 </li>
  <li>Switzerland      25</li>
  </ul>
  
  <p>Now AT, BE, CH are group-1 countries, and in my output I want to display as below:</p>
  
  <ul>
  <li>Austria          10 </li>
  <li>Belgium          30 </li>
  <li>Switzerland      25</li>
  <li>Group-1          65</li>
  </ul>