In the item properties, go to the 'Interactivity' menu, choose 'Action' then 'Toogle Visibility'
answered on 21 Jan 2011, 02:17 PM
This is a Drilldown Report Action. The CrossTab demo is part of the demos that came with your installation of Telerik Reporting. (Start -> All Programs -> Telerik -> Reporting Q3 2010 -> Visual Studio Examples ). In the concrete example we have added a Drilldown action that toggles a Table Group's visibility.