Onetime vendor bank account details

Hi,

When entering Name and Address details for a onetime vendor, the Bank Key and Bank Account fields can also be entered. Our auditors are in a flap that anybody who has access to create invoices using a onetime vendor, can enter in bank details (possibly there own).

They would like to limit the access of the Bank Account details on the input screen so that only certain users can enter these details.

Is there any way to disable some fields on this screen, or have some sort of authority check before this screen is displayed, so that only certain users would be able to input or change these fields?

Thanks,

Michael.