I am using the Craft Commerce templates as a starter, haven't altered that much yet.
On the payment-method page, I have a gateway for credit card/Paypal, etc. via a plugin, which works fine.
I would like a second option, where the customer can make the order without paying, but will receive a physical invoice together with the post-package.
I guess this would mean, if the user clicks this additional option (on the payment-method page, the possible gateways are displayed as different radio options), they get redirected to a different payment.twig page, where they can finish the order without paying. (or alter the payment.twig page in some way)
I was searching, but could not find anything in this direction.