You can add custom messages as header or footer texts on the receipt, invoice and quote.

Set the custom message for A4 size paper:

Go to “Settings” > “Print” > “Ink Jet/Laser Printer” > “Ink Jet/Laser Printer Template Header/Footer Texts” section.

Click Edit and supply the Header 1 Text and Footer 1 Text.

Click Save Changes to save.

Set the custom messages for thermal coil paper:

Go to “Settings” > “Print” > “Thermal/Coil Printer” > “Thermal/Coil Printer Template Header/Footer Texts” section.

Click Edit and supply the Header 1 Text and Footer 1 Text, Footer 2 Text.

Click Save Changes to save.

Video Tutorial: Set custom messages on receipt, invoice, quote