To apply the "Visibility" drill-down, I used the Expression "=level() > 2" then set the Toggle Visibility setting to use the employee name field (for me it was textbox5). This was to have the top 2 levels of the hierarchy visible (level 0 and 1) with the remainder hidden but toggled by clicking on the appropriate manager name.

All worked perfectly, except when exporting to Excel where the indents and drill-downs weren't applied. This is a minor annoyance but the report is great in the normal front-end.

A