You can create payment information for your company in Erplain.
This allows you to select a number of things that can appear on your documents and help your customer through their payment process. You can include things such as your bank details or a BBAN.
To create that, simply click on create in the payment information section, you can then fill the form and save it :
You can create multiple payment informations if needed, and click on default to have a default payment information picked unless told otherwise in the invoicing process.
If you don't have a default payment information, you'll have the opportunity to select one when creating a sales document.