Chart grand total and group total as seperate bars

[aaarthi]

Hello,
Is it possible to chart both the Grand total of a group and the goup total in the same chart as different bars?

The scenario is this. I have to create seperate bars for grand total of Premium amount as well as the total of Premium amount for different regions in the same chart. I know we can chart the group totals of premium amounts very easily. But what if I want the grand total also as another bar in the same chart. Is it possible?

Thanks,
Aaarthi.