pivot table , very very urgent....help plz

[#1]

hi

i am using the calculated dimensions in pivot table as rows and column.

now i want to group my columns. how can i do that??

i have columns as a,b,c,d,e,f and these all are calculated dimensions and i want to group a and b with a heading class1 on their top and c,d class2 and e,f class3.

how to do that???

[vijay_iitkgp]

You can create calucalted dimension by using Add expression in Group.

[#3]

but how can we add a calculated dimension in a group??/