WFC Generate Statements - Manager Hierarchy option

Summary

How is the WFC Generate Statements - Manager Hierarchy option supposed to work?

Content

In 20D, the new option to Generate Statements - Manager Hierarchy was fixed when generating statements from a WFC plan. Now that it is working I am not clear on the intent of this functionality. When I proxy as a manager and then select this option, pick one of that manager's direct reports, I would expect to get statements for that manager's hierarchy both direct and indirect workers. But it seems to only pull those employees that make up the hiearachy chain vs. including even the individual contributors (non managers).  See document attached with screen shots. My manager example has 100+