carpool spaces & building with multiple entrances

Hello everyone, Our project has a main entry, and two secondary entries, and is situated on a campus with existing parking scattered around the campus. Should I locate the carpool spaces to the closest entry or should I divide up the required number of carpool spaces among the three entries? For the latter, I would designate 1 carpool spot to each entry, and locate the spaces that are the closest. This may not be considered preferred entries, because it would be a shorter distance to locate all three carpool spots to the closest entry, i.e. one of the secondary entries. Thanks in advance!