Most places have excellent ways to arrange their parking. Often times your parking fee is billed as an add on to your charging fee. This may mean that your parking fee is €1,- an hour, while your charging fee is 0,35 per kWh. Say you park your EV for 5 hours and charge 10 kWh in that amount of time. In this case your E-Flux by Road account gets charged €8,50 if you've chosen "Comfort" (€3,23 per month for unlimited charging) or €8,82 if you've chosen Flex (€0,32 per charging session with no added charges). E-Flux by Road will always bill the exact amount with no added fees, so it won't cost an arm and a leg.
In other cases you'll just pay for your parking using the trusted parking meter. Always check the charge point before scanning your charge card. This way, you'll know how to proceed.