How do I define that my Invoices contain a Remittance Slip?

How do I define that my Invoices contain a Remittance Slip?

Ostendo provides you with the option to include a Remittance Slip in the Invoice Print.  This also applies to Customer Statements.  To do this go to File>System Configuration>System Settings and check the Invoice Remittance checkbox.  Also the Statement Remittance checkbox if required