About
A hierarchy is defined within the group functionality.
Steps
Drilldown functionality is only available when a published report is viewed in a browser or exported to a format such as Microsoft Excel where the renderer supports this kind of interactivity.
In the Group Properties, on the Visibility tab, select Hide, select “Display can be toggled by this report item”, and select the parent group.
The visibility must be set up on the group and not on the Text box.
