If you want to apply the same footer across all your invoices or the same footer across all your statements, please refer to this article: How to insert document footers in SFM
To configure an individual footer, please follow the steps below:
Navigate to Support > Bank Account Details.
Add a new bank account by clicking the + button.
Insert the custom footer at the end, as illustrated in the provided screenshot.
To activate this specific document footer, it must be assigned as the default for the relevant client or supplier. To do so:
Go to Current Year > Sales / Purchase > Client / Supplier Maintenance.
Select the appropriate client or supplier.
Under the Client / Supplier Details tab, navigate to Secondary Details.
Click the Amend button.
Choose the relevant bank account from the Link Bank Account dropdown menu