1. Making even a Minor change in the Pillar structure (including plaster) is a gross Criminal Offence, under the Regional Town Planning Act and the Municipal Act. Hence any changes in the Pillars CANNOT be done, for any reasons whatsoever. However you can exchange your parking space with other like minded owner, without any legal reference to the Society.
2. Open /Stilt /Podium Parking spaces are all classified as "common open spaces" & Free of FSI, under the Regional Town Planning Act and CANNOT be Sold or Purchased or Registered. Parking spaces can be allotted (most of the times by illegally collecting money, which is a criminal offence).