I posted the question again and found this solution.
We can use the dimensionality() function with an IF (Group='GCC') statement for Group.
This would exclude all Totals except those corresponding to GCC.
It would look something like this,
If (Dimensionality()>1, Limit , If (Trim(Group)='GCC', Limit ) )OR
can achieve the above requirement using Straight Table.
In a staright table we can mention No total in the expression tab for a particluar expression.