Problem on creating group headers in a report in WRS

[srisai]

Hi,

Here i am facing a problem to create a group headers for a report in WRS.I would like to show diffferentiation between set of varibales under category wise.But i couldn't find the way to assign these group headers in the report.In the same way i need to generate so many reports in order to show the differentiation while end user looking at the report. So how to proceed on this? Please advice?

Thanks, kavya