NextGen® Enterprise PM can evenly apply a payment received for each line item with amounts due. When you set a distribution option in the Practice Preferences window, it becomes the default distribution option for the practice.
Open NextGen® Enterprise PM.
Select Admin > Preferences > Practice
The Practice Preferences window opens.
Select Transactions under the Preferences list.
In the Default Transaction Spreading, do the following:
In Transaction Source, select the source of the transaction.