Final answer:
To fix the issue of potentially more customers being overdue, review the customer payment history, contact the customers, and refresh the QuickBooks dashboard to ensure data accuracy. Additionally, proactive monitoring, as shown by Noel's detection of an overpayment, can prevent financial mistakes.
Step-by-step explanation:
To address the employer's concern that more customers may be overdue, there are several steps that can be taken. Option b) Review the customer payment history and update any overdue invoices might be the most direct approach. This involves checking the payment records to see if any payments are past due and ensuring the system reflects the correct statuses. Another option is c) Contact the customers to remind them of their outstanding balances, which may prompt them to make a payment and reduce the number of overdue accounts. Lastly, option d) Refresh the QuickBooks dashboard is important to ensure the data displayed is current and accurate. In addition to these steps, it is critical to have a proactive monitoring system similar to the scenario where Noel noticed a large overpayment error and promptly alerted the concerned parties, which prevented a financial loss for the company.