ABN not being printed on Invoice

Using the desktop version of Manager. I have entered the ABN in the setting area but it is not being displayed or printed on invoices. We are a not for profit organization not registered for GST. How can I correct this.

Enter the ABN at the end of the address field of the business details.

Thanks Tony
I had thought of that but seeing as the ABN is entered as part of the business details I thought there would be a way to have it included without having to resort to a work around