Is any way grid can heave header and sub header?

Hello,
 
Thank you for the question.
You can set grid header using title option: https://codepen.io/webdatarocks/pen/MqdqqW
As for the sub-header, there is no such option.
 
Also, you can simply put some HTML with header and sub-header before the div with the table.
Hope it helps.
 
Regards,
WebDataRocks Team