Job Level Visibility is controlled at the user role level, so you have to go into each user role and scroll down to the Job category & level section to adjust these settings according to your preference, see this section pictured below:
Within each user role, you are able to set job level visibility for headcount and employee records, which have the same options:
Full Access controls access based on the departments the user is allowed granted access to within their ABAC.
Reporting line only controls access based on the user's specific reporting line.
As an example, if you want all Department Head user roles to only see the job levels for their specific reporting line for both headcount and employee records, you would toggle off ‘full access’ and just keep ‘reporting line only’ toggled on (in both ‘view headcount job level’ and ‘employee job level’ sections) within the Department Head user role settings.