I'm a newbie to Telerik RadGrid and have been struggling to find the correct code to have a group summary row with columns. I find examples where the summary rows have text on the group header, but no examples where the summary rows can have values in the columns? Is this even possible with the RadGrid. I have used other manufacturer's controls and this is possible, but can't find any example code where this is possible with Telerik.
Could someone please provide some basic sample code to achieve the group summary rows with columns as in the screenshot. A simple test project demonstrated this would be appreciated.