Having trouble finding correct grouping style

The grouping style I am trying to replicate is in the Grid.Grouping.Web - Grouping Basics AJAX example found here under the "Grouping" tab: http://www2.syncfusion.com/syncfusion/infrastructure/samplebrowserasp/samples.aspx?version=2_0&browseto=Grid.Grouping.Web

The grouping style I have been able to produce, thus far, can be seen (and compared with the example) in the attached image. I have browsed and understand the source code accompanying the example, but still don't know what I am missing.

Particularly, I want the plus/minus style appearance with the name of each item (e.g. "type") in its own header and the rest of the details (e.g. "title_id", "title", etc.) as children.

I know this should be simple, but I can't seem to find it. Thanks for your help,
-Matthew

syncfusion grouping.zip

Addendum:
The data is currently housed in one DataTable. If I need modify the data source or create some sort of relationship in order to achieve the desired appearance, please let me know. Thanks,
-Matthew

Hi Matthew,

Regarding the Question 1:

To customize the Plus/minus cell in a grid, Please refer to the below links for more detail.

Forum : http://www.syncfusion.com/support/forums/message.aspx?MessageID=47429
KB Article :http://www.syncfusion.com/support/kb/grid/Default.aspx?ToDo=view&questId=248

Regarding the Question 2:

Refer to the KnowledgeBase (KB) article link below, that helps in sorting columns programatically.

http://www.syncfusion.com/support/kb/grid/Default.aspx?ToDo=view&questId=149

Best Regards,
Haneef