When you have enabled the Payment initiation it’s possible to export your payment files with the export protocol (NL) or bank import/export setup (W1) This setup will directly create the payment link when the export is created from the payment history or the financial journal.
When you are using the W1 the created vendor payment lines are depending on the prepare option, you can summarize per vendor or you can make single lines based on document no. Check the Microsoft help for the options.
Payment and authorization is possible within the providers portal or direct signing from business central. The preferred option can be found in the setup. See Chapter Creation and signing payments