title: How to install a missing Qt module?
body: <p>How can I install/add a missing Qt Module under Mac OS? I have Qt Creator installed and working, but a new project gives the following error:</p>
  
  <pre><code>Project ERROR: Unknown module(s) in QT: charts
  </code></pre>
  
  <p>Can I just download and install the missing module or do I have to reinstall Qt with the missing module selected? Thanks</p>