BPC Drill Through

Hi,

I am trying to implement drill through functionality in our cube.

Here we want to have drill through for parent which gives the details of all the children.

Ex: Drill through for Time Q1 which gives all the details of P01,P02 and P03 values( first three periods).

I know that we can for base levels in the hierarchy. But can anyone please tell me if it is possible to drill through parent level.

Thanks.