An account's credit balance can be used to pay for a remaining balance.

To apply the credit balance:
  1. Click People tab
  2. Search and select account or participant name
  3. Click Make Payment
  4. Select Custom Amount
  5. Input amount of credit balance to be used
Optional: click on Manage allocation to allocate the payment if there are multiple line item in the order
  1. Check box next to Use customer's available credit balance
  2. Submit Payment