Hi Keshav,
Thanks for your interest in Syncfusion products.
You can set header column grouping using ShowGroupDropArea of GridGroupingControl after loading datasource from XML.
Please refer to the following code snippet.
this.gridGroupingControl1.ShowGroupDropArea = true;
You can refer to the sample code in the following location.
http://websamples.syncfusion.com//samples/Grid.Windows/Development/GGC_ReadOnlyColumn.zipPlease let me know if this helps.
Regards,
Nisha