Payment Predictor Method

Hi,

I wanted to use two of the delivered payment predictor methods(PP-REFS and PP-PASTDUE). When the payment predictor process runs I want the system to first check the PP-REFS and then PP-PASTDUE. So if I do not specify the default payment predictor method at the business unit and the customer level, will the payment predictor process executes all the defined payment predictor methods which is these two in my case.

Basically I am trying to understand how the payment predictor process works if no default method is specified at business unit and customer level.

Thanks,

Prasanthi