Grid totaling

I have a grid that is grouped by item type. There is a total on item type.

Item type 1
A - 1
B - 2
C - 3
Total : 6
Item type 2
D - 4
E - 5
Total :9

I would like to have another line below “total : 9” showing the total for type 1 and type 2
“Total type 1 and 2 : 15”

Is this possible through the SC interface?
Thanks

You can turn on Grand Total in Totals -> Settings. Is this what you want ?

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