The CollapsibleTreeViz Plugin currently supports up to 6 levels of hierarchy to add in the visualization rows (please see attached screenshot to see what I am referring to). After logging an SR with Oracle Support, we got to know that it's a limitation in the Plugin.
Need an enhanced version of this plugin that allows to add more than 6 attributes in the rows, so that we can have an org chart created for the entire hierarchy up to the top manager.