The Nucleus Mall has been offering free parking. However, it has now decided to charge for the vehicle parking. Currently, they have observed that the vehicles that get parked are of various types, two-wheelers (scooters/bikes), four wheelers (including hatchbacks, SUVs). People also park them for various durations and on various days. They have approached the consultants for their advice on how they should charge for vehicle parking. Please provide what would be your advice to them. Please state the logic and the objectives of your plan.