1. Install the wayFinder package
2. Select the resource which you want to show:
The 'published' resources are shown in drak icon, otherwise light color.
3. Use wayfinder:
<!-- Nav -->
<nav id="nav">
[[Wayfinder? &startId=`0`&level=`2`]]
</nav>
See more: http://rtfm.modx.com/extras/revo/wayfinder
4.Show result: