did include anything about how to pay the fines should I go to straz Miejska ?
What they need first from you is to fill those statements out - part B and C, (what about part A?) and sent them to the provided address.
Part B - the driver's data and signature, part C - in the case you don't want to reveal personal data of the driver, and you agree to pay the fine - your data and signature needed.
After receiving those statements they will sent to the address given the details how to pay the fine.