This form allows you to view and select suppliers from the Cheques\Payments, Payments (if it is a supplier refund) and Supplier charges forms.
If the supplier does not exist you can create them by double-clicking the Suppliers button. Once you have finished the display shows the new supplier.
If there are a large number of suppliers you can find them by typing in part of the code or company name. As you type the records are searched for the nearest match and the display update to show those that fit.