To add a payment method, you first need to create it. Go to Identify Customer to allow this payment method exclusively for registered customers., and set a name. Check
Then, select the Journal. Choose Cash to use this payment method for cash payments, or Bank to use it for card payments.
Selecting a bank journal automatically adds the Use a Payment Terminal field in which you can add your payment terminal’s information.
Once the payment method is created, you can select it in your POS settings. To do so, go to the POS’ settings, click Edit, and add the payment method under the Payments section.