By default, car park space owners (the administrator has to declare their space number or identifier in the car park) can declare if they use their space for the current week and the week after. The administrator can however extend up to 4 weeks of planning.
When they connect the first time, they just have to click on the 'Confirm' button to validate the use of the space. All check boxes are already pre-checked to make it easy.
If the user doesn't confirm using the space, it will be considered as free for the next day and available for any user requesting a space.
Validating the use of the space at least once every two weeks enables to be sure that car park owners confirm the use of their space and don't forget to declare it free, leaving it empty and not used.