Exclude released parking spaces from booking quota
The “Exclude released parking spaces from booking quota” option ensures that any parking spaces released from an advanced allocation rule do not count toward a user’s booking limit. For example, if a space reserved for a specific group is not booked within a set time and becomes available to others, users who book it afterward won’t have it deducted from their weekly or monthly booking allowance.
The “Exclude released parking spaces from booking quota” rule works alongside the “Max number of bookings per period” setting.
When users are limited in how many bookings they can make per week or month, enabling this option ensures that bookings made from spaces released by an advanced allocation rule do not count toward their booking limit.

Example:
If the maximum number of bookings is set to 2 per week, and an advanced allocation rule assigns parking space 24 to the HR team, you may also configure a “release if not booked” rule (e.g., 4 hours after the start of the working day).
Assuming working hours begin at 9:00 AM, if space 24 is not booked by 1:00 PM, it is released to all users. If another user books this space after it has been released, the booking will not count toward their weekly or monthly limit.
For instance, if the user had already reached their 2-booking limit before reserving this space, they would still retain those 2 bookings after making the additional reservation.

Click here to view the full guide on Advanced Allocations.