Parking

How does automatic number plate registration work?
Do I need to do something when I enter?
Do I need to do something when I exit?
What should I do if I can't remember my number plate?
How do I pay for parking?
I paid but would like to park longer than expected, what do I do?
What should I do if it can't read my number plate?
What should I do if the parking continues even though I have exited?
I am parking a motorbike. What should I pay particular attention to?
I forgot to pay, what do I do?
I can't find my parking when I search for my number plate on the website?