There are two ways to handle the credit balance.
First one is applying the credit balance to specific invoices. The other one is paying the money to the customer directly.

Applying the credit balance to specific invoices

1. Select the Customer.
2. Click the Pay Credit Button.

3. Select the credit invoice that you want to pay to the invoice

After applied the credit invoice, you can see the credit invoice no. And credit balance will reduce

4. Click the Apply Invoice button

Paying the money to the customer

1. Select the Customer.
2. Select the payment type.

3. Click the ‘Pay Credit’ button.

4. Select the credit invoice that you want to pay to the customer

5. Confirm the credit pay