At Mackey Park, Tempe and also at Royal Sydney Golf Club. Probably 4 qualifying blocks followed by a best-of-3 knockout, plus consolation events.
https://portal.revolutionise.com.au/cnsw/events/319519

NSW GC Open Singles Championship

Blue block

Wins Losses Net
Hoops
#
Levi Franks (Cashmere, NZ) 7 0 +32 1
Tony Croft (Port Macquarie) 5 2 +8 =2
Jill Sullivan (Cooks River) 5 2 +2 =2
Martin Wooster (Toronto) 4 3 +2 4
Raymond Chapman (Ballina Cherry Street) 3 4 0 =5
Bob Berry (Chatswood) 3 4 -5 =5
Brenda-Lee Peet (Maitland) 1 6 -17 7
Terry Abbott (Killara) 0 7 -22 8

Ranked by the share of matches won. A tournament's own regulations may place its players otherwise.

There is no known tie break method.