Hi Tasnim,
You can have look on our sample installed locally (or) online,
Local sample path:
AppData\Local\Syncfusion\EssentialStudio\
8.1.0.30\BI\Web\OlapGrid.Web\Samples\3.5\Creating Reports\Custom Collection Demo
Online sample link:
Custom Collection DemoWell in our OLAP Grid we support grouping and subtotals, but grand total is not available can I know how critical grand total feature is for you.?
Thanks
Dwaragesh M.B.