Group settings by 2 fields or more. Can create ?

[#1]

I have table with fields column1, column2, column3 , column4 .... (data have from hierarchy function)

Can I in group settings create in 1 dimension field from 2 fields or more

(example:

1. [dimension field1] = column1 & ' ' & column2

2. [dimension field2] = column1 & ' ' & column2 & ' ' & column3

Problem is , because when I get data by hierarchy function - column3 can be exactly from difference trees.

And when I create chart tables straight tables column3 summing all data

Thanks for answers

Vilgis