Someone

  <!-- Other -->
  <Menu>
    <Name>Other</Name>
    <Directory>Other.directory</Directory>
    <OnlyUnallocated/>
    <Include>
      <And>
        <Not><Category>Core</Category></Not>
        <Not><Category>Settings</Category></Not>
        <Not><Category>Screensaver</Category></Not>
      </And>
    </Include>
  </Menu> <!-- End Other -->

</Menu> <!-- End Applications -->