title: How can I share a Document Library sub folder only to a target audience?
body: <p>I have a document structure where I would like to grant read-only permission to specific group on a sub folder within a document library.</p>
  
  <p>I am using SharePoint 2007</p>
  
  <p>For example:</p>
  
  <pre><code>Folder : Business  &lt;--- Document Library  under business I have two sub folder. 
  
          ---&gt;  2009 --&gt; Sub Folder  --&gt; store all docs
          -----&gt; 2010 --&gt; Sub Folder  --&gt; store all docs
  </code></pre>
  
  <p>Now, I have two groups: Group A, Group B. I would like to grant read-only permission for the 2009 folder to Group A and grant read-only permission for the 2010 folder to Group B. I want to make sure Group A people cannot access the documents under the 2010 folder and vice versa.</p>
  
  <p>I have tried to setup a target audience on Business folder. But I am unable to find a way to setup permissions on the sub folder level. Please let me know how can I achieve this.</p>