<p>You can forbid access to categories. Switch the category access type to
"private" if you want to manage permissions.</p>

<p>You can set a category to private by editing a single category
(<span class="pwgScreen">Administration &raquo; Categories &raquo; Manage
&raquo; edit</span>) or by setting options to your whole category tree
(<span class="pwgScreen">Administration &raquo; Categories &raquo;
Properties &raquo; Public / Private</span>).</p>

<p>Once the category is private, you can manage permissions for groups and
users with 3 screens:</p>

<ul>

  <li><span class="pwgScreen">Administration &raquo; Users &raquo; Manage &raquo;
  permissions action</span> (one link per user)</li>

  <li><span class="pwgScreen">Administration &raquo; Users &raquo; Groups &raquo;
  permissions action</span> (one link per group)</li>

  <li><span class="pwgScreen">Administration &raquo; Categories &raquo; Manage &raquo; edit
  category permissions action</span> (one link per category)</li>

</ul>