Customer payment

If a client makes a payment on his account, how do i process it on SambaPOS?

Not in front of samba but there is payment buttons on the right (similar to settle screen) if you go in to accounts and select an account.

oke, but how do i then print a receipt for the customer to show that he paid?

If you don’t have one already you would need to setup a print template, print job, action and rule to print a receipt of account payment.
Have not fully used customer accounts in a system yet have only had some experimentation with how it works.