How to add Vendor Bank Fees on Bill?

The bill transaction has a field called vendor bank fees, which can be used by checking the supplier's bank fees field in the vendor record, but can this vendor bank fees field be used without checking the supplier's bank fees field in the vendor record? For example, can this vendor bank fees field be used without checking the supplier bank fees field in the vendor record?

Because it is not always the case that the supplier pays the bank fee, since it differs each time when the supplier pays the bank fee and when we pay the bank fee. Therefore, if we set it in the vendor record, the supplier will pay each time, and we will not be able to change it in the bill transaction.