Content Clusters
Navu's job is to help you organize your website visitors into meaningful groups and, for those where it makes sense, to guide them accordingly. Some of the most valuable information in dividing visitors into groups is to watch to see which content they are most focused on.
A content cluster is simply a name you give to a list of web pages on your site. The Content Clusters tab, accessible in the site menu, gets you to a page that lists the clusters that you have defined. Select a cluster to see the list of URLs or to update it.
Once you have defined some clusters, you'll see that they will show up in the visitor filtering options in Tracking and Segments.