The short answer is "no", unless the passengers have disabilities.
In that case, the driver should apply for a Class 2 parking label, intended for the caregivers of people with disabilities.
Caregivers with this label are allowed to occupy the designated parking spaces for up to an hour, to allow them to pick up or drop off a person with disabilities.
Otherwise, it is an offence to park in such a space.
Fines for first-time offenders were quadrupled from $50 to $200 in December 2015.
Parking is ample in Singapore. There is no reason to occupy a space designated for people with disabilities - even briefly.