Header Addition

Hello all, hope you all are doing good.

I have created measure for opening, opening amount, purchase, purchase amount, consumption, consumtion amount, closing, sclosing amount as shown in the picture and i have used matrix visual to display the data. I want to add a head named A under which there should be opening and opening amount, next should be B under which there should be closing and closing amount and so on....

Can any one help me regarding this issue??

Your help will be appreciated. 

amitchandak 

Thanks In Advance.