HOW TO:
Select all invoices you would like to promise to pay by checking the box at the left of each invoice line.
Above the grid, select "Promise to Pay." (Additionally, you can select the "Star" icon found in each invoice line to only enter a promise for that invoice.)
Enter the expected payment date as well as any message you would like to associate with the promised payment.
Once you are done editing, select "Submit" at the bottom of the form.
This expected payment will show as a communication on that Customer's account overview.