My employee can see extra people in the hierarchy, however, I'm not sure why. They look like employees that report to people who report to this employee.
This view of indirect employees is due to the hierarchy system the platform has.
Anyone at the top of the hierarchy is able to see employees that report indirectly to him/her. Unfortunately, we do not have a function to turn off viewing indirect employees unless you remove the information in the 'Primary managers' section.
E.g. Employee 1 has Manager 1 as their 'Primary Manager' and hence Manager 1 can see anyone who reports to Employee 1.
Removing a person as a 'Primary Manager' will also mean they can't access that employee file.