At Setup > Account Info > [Advanced Tab] > Edit , Administrators can set the Posting Office and if the payment is posted to the Responsible Party.
Payment Portal Posting Office
-Responsible Party Home Office
OR
-Current Session Office >> the office where the user is logged in when the payment portal link is sent or the office where the payment portal prints on the statement.
OR
-List of Offices set up with credit card processing devices
Post Payment to Responsible Party: [Checked = Yes]
In most cases, these settings do not need to be edited