title: Nested Set Model: Inserting Node at the end of SubNodes
body: <p>Existing Data (name, lft, rgt):</p>
  
  <pre><code>Root, 1, 4
  Item1, 2, 3
  </code></pre>
  
  <p>Looks like:</p>
  
  <pre><code>- Root
  --- Item1
  </code></pre>
  
  <p>How do you insert a new node (Item2) BELOW Item1?  My system's current logic follows most examples I've found online but the result is Item2 ABOVE Item1.</p>
  
  <pre><code>- Root
  --- Item1
  --- Item2
  </code></pre>
  
  <p>Thank you for the help.</p>