If you are always going to be grouping in this fashion (i.e. it is not dynamic) then you can configure your grouping on the name column. 

Normally if you do this, jqGrid will send the sidx parameter of the request to sort on the name column, which is what you dont want.  The thing is though, you dont have to honor it.  Override your sql query to force it to always group on the sequence number.  When you are returning the data though, use the name column instead of the sequence number.  Here is an example of this

pasting code here is terribly painful so i hijacked a jsFiddle

http://jsfiddle.net/4N3rR/1/

note, the fiddle will NOT run, but you can copy/paste it into your own application to see the result. Here is a picture as well

Sequence no  Name

1 bbb

1 bbb

1 bbb

2 aaa

2 aaa

2 aaa

If I group by name --> aaa will be coming first and it will display as aaa

if I group by seqno ---> bbb will be coming on first displaying 1

My requirement, I need to display bbb on first by grouping so I can group by sequence no.

as it take default sort on grouping, it is sorted based on the alphabetical order, which is not required in our case it should sort only the sequence number.

My alternative approach is, I can group by sequence number, but I need the name to be displayed on the group text.

Thanks ,

or are you always wanting to disable sorting. 

If you are grouping on one column, why would you want to display a different column name in the group text.  Are you trying to display the column name or the column value ?

Need to Disable sorting on Grouping view,

Else Display the Different column name on GroupText 

Regards