DataTables

I need a layout that automatically groups rows in ALL columns. For example, here's a table of data I'd like to show:

 
Stage 			Actvt Type 	Activities
--------------------------------------------------
Active Consideration	Email		32
Active Consideration	Meeting 	1
Active Consideration	Phone 		5
Customer 		Meeting 	1
Customer 		Phone 		3
Prospect 		Email		12
Prospect 		Meeting 	1
Prospect 		Phone 		1
Qualified Lead		Email		48

I'd like to display it in this manner:

Stage 			Actvt Type 	Activities
--------------------------------------------------
Active Consideration	Email		32
			Meeting 	1
			Phone 		5
Customer 		Meeting 	1
			Phone 		3
Prospect 		Email		12
	 		Meeting 	1
	 		Phone 		1
Qualified Lead		Email		48

If at all possible, I'd like to display row-totals where applicable, but I can live without that, for now.

I see an example that groups data in the first column here: http://datatables.net/release-datatables/extras/FixedColumns/row_grouping_height.html. It does exactly what I need - on the first column. I don't see a way to do that for more columns or, as I need it, for all displayed data. I tried the "iLeftColumns" option - the resulting table remains un-collapsed.

My set-up for DataTables is as below:

			var oTable = $('#reportData').dataTable({
				"aaData": dataTblData,
				"aoColumns": dataTblHdr,
				"bPaginate": false,
				"bLengthChange": false,
				"sScrollX": "100%",
				"bProcessing": true,
				"bStateSave": true,
				"sDom": "\"<clear>\"fTti",
				"oTableTools": {
					"sSwfPath": "..jquery/swf/copy_csv_xls_pdf.swf"
				}
			});

Is there a way to do what I need? Pardon me if this has already been asked and solved in this Forum - I couldn't find the answer in my search. Thanks!