Please Click here for Informational Videos. Interbill Handbook Local Backup Users and Roles Billing All Clients Billing Groups Undo a Billing Returning Payment Editing Billed Statements Emailing: with or without Bills Billing Some Clients Write Off Balance and Close Removing Billed Late Charges Changing Billed Rates About Late Charges Entering Courtesy Discount About Trusts and Retainers Using Description Codes Collection Installment Billing Use ATZ to Adjust Client Balance