Once a credit or a payment has been created, if the Business Rules are not setup to Always automatically apply new payments, then each credit or payment must be manually applied to each charge.
 

To automate this process, configure the Business Rules to automatically apply the credits or payments:

  1. From the Configuration page, click Business Rules
  2. Highlight the General option
  3. Select Always from the Automatically apply new payments and Automatically apply new credits drop-down menus

To turn off the automation:
  1. From the Configuration page, click Business Rules
  2. Highlight the General option
  3. Select Never from the Automatically apply new payments and never apply new credits automatically from the drop-down menus