Adding totalrows for certain selected rows

[sittimunirahar]

I have tried adding totalrows to get the sum/count of all rows for selected columns, and it works fine. However what if i want the sum of every 5 rows or every several rows based on the data of the table? for instance I want to do like this:

Is it possible?

Name	Commission
Jason	5000
Jason	4000
Total	9000
Susan	2000
Susan	3000
Total	5000

[JeffersonBarefoot]

Bump.

I'd love to know how to do subtotals, too. Is there a built in way, or do we need to calculate the subtotals and totals, and then reconstruct the grid's source data?