Grouping Measures

Hi Everyone, 

I have a Revenue, Projections and Targets table, for which I have created 3 simple DAX Measures. 

1. Revenue = sum(Revenue [invoice_amount])/10^5

2. Target = sum(Targets [target])/10^5

3. Projections = sum(Projections [projections])/10^5

I would like to club these into a group say - PAT, wherein I can drill up or drill down as required. 

Currently my headers look this way: 

However, I would want it to be like a +/- situation, where I can hide the measures if I click on the minus sign or show measures if I click on + sign. 

The idea is to be able to show and hide as required.

Is there any way this can be done?

Any ideas would be appreciated.

Regards,

Saumitra