The Network chart is the default chart type in the Relationships tool.
The network chart only works when Concepts or Themes is selected for 'By understanding'. It plots and connects strongly related patterns with lines. When the 'Cluster' switch is enabled, nodes are coloured the same if they reach a statistically significant level of association. These 'Clusters' tell valuable stories and each cluster is having a significant impact on the metric you want to improve.
Clicking node in the chart will select it to display in the Summary & Examples panel on the right.
Ctrl-clicking nodes will add them to your selection.
Clicking a line will select both connected nodes
Use the mouse wheel to zoom the view and click and drag a white section of the chart to position your view