Literally "playwright" or "director." In slang, it refers to the "fate" or "script" behind a perfect moment.
It is widely recognized in popular culture, including songs like "Zat Sayar A Lo Kya" by Aye Chan May, which describes a love that feels destined and free. Zat Sayar A Lo Kya zat sayar yet a lo :D
"According to one's wish" or "exactly as intended". Literally "playwright" or "director