How to do display group name as a header

Hi Experts

I am new to Adobe Live Cycle designer and learning very basics. My objective is to display Group Name once on top and all the condition text under that group name and than 2nd group name and relevant condition text under it. same as SQL group by thing.

I have added a table with header and rows with group name placed under header and condition text in rows, but it only showing either first group name and list all the conditions irrespective of group etc.

My objective is like:

Group1 Name

        Text 1 under group 1

         Text2 under group 1

Group 2 Name

      Text 1 under group 2

My fields from webservice are :

Group ID

Group Name

Text