title: Umbraco, create node, list of available node types
body: <p>I have document type A with subtypes B, C, D. E and F.
  I also have node AA with sub-nodes BB and CC.
  I want to create subnode DD under AA and DD must have document type D. 
  I have created document type D by my own.
  When I create DD I steel see document types B, C, E, F in the list of available option.
  What I need to do to create node DD having document type D?</p>
  
  <p>Thank you</p>
  
  <ul>
  <li>this is U mbraco cms</li>
  </ul>