APO DP Macro to perform calculation for a particular month in quarter.

Dear experts,

We have a requirement to perform calculation for a particular month in Quarter and I am not sure of how this could be achieved and request to help.

Ex: Business requirement

When I am in 1 month of the Quarter>>>No calculation should happen.

When I am in 2nd month of quarter>>>Calculation should happen

When I am in 3rd month of quarter>>>No calculation should happen.

Please suggest ways of achieving above business requirement.

Regards

Ashwin