All you have to do is insert your car park ticket followed by your bank card (depending on the car park, this is inserted into the reader provided or via the “contactless” system). A proof of payment is issued automatically.
If you have received a parking voucher from a shopkeeper or restaurant, insert it after the car park ticket and it will be taken into account.
In this way, you can avoid queuing at the ticket machines at peak times and go straight to your vehicle.