Payment Terms in PeopleSoft Billing and Receivables

Hi

This is regarding Payment Terms Set up in People Soft pertaining to Billing and Account Receivables.

There are various payment terms defined like NET30, NET45, EOM30 etc.

The due date calculation for invoice payment is calculated through payment terms tagged to it.

For example, if an invoice has invoice date 20 Sep 2016 and its payment term is NET30 , then due date=Invoice date +30.

But in case of EOM30, due date should be month end date of the invoice date +30.

In our system, the due date for EOM30 Payment Terms is also being calculated as Invoice date+ 30.

Please let me know the exact set up where this can be changed for various payment terms to reflect correct due date or like from where this calculation is driven.