You can add a new reminder to alert your customers to make payments for their pending invoices and remind the users in your organisation, including yourself, about outstanding bill payments.
To create a new reminder:
Note: The recipients vary based on the transaction for which you create a reminder. For an invoice, it could be just you, the customer, or both. For a bill, it could be just yourself or the users of your organisation.
A reminder will be triggered to the customer to prompt them about their outstanding payments for invoices or to the users of the organisation about their upcoming/overdue payments for bills.
Books
Online accounting software
for small businesses.