Hierarchy is the way that you organize your company structure and visibility. There are two parts to hierarchy; organization and sites, also previously known as above and below sites above site hierarchy.
Hierarchy is used for reporting, people module, stats, and checklist admin visibility.
To add a parent to a user in the below site hierarchy please follow the instructions below:
Login to the Admin tool.
Click on Employees and select the user you wish to add a parent for.
Click Config, then click Hierarchy.
From the list, select Parents.
Click Add and search for the parents name.
Click Save.
Note: Allow up to four hours for this to update within your system and reporting.