I know the system very well.
I used to cheong GL during the times where Malaysian WLs were predominant.
If I found the gal attractive , I would ask OKT for name.
and OKT would tell me. During that time, I am a normal person.
I merely went to 1654A (one of the houses I never went before) for fun acting as disabled person to see whether how disabled person would be treated. I was quite prepared for cold treatment, like ''waving hand to tell me to get lost, etc.''
OKT of the house 1654A is the elderly man with black thick framed spectacles and his assistant is the tall tanned man.