Hi Ronald, to obtain a handicap parking decal in Singapore for reserved parking lots, you need to apply for a Car Park Label Scheme (CPLS) label from SG Enable.

https://www.enablingguide.sg/im-looking-for-disability-support/transport/car-park-label-scheme

Here is a similar question that has been answered previously: https://www.motorist.sg/ask-motorists/3225/how-to-get-temporary-parking-lot-for-disabled

Have a nice day!