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

Yellow block

Wins Losses Net
Hoops
#
Malcolm Powys (Marrickville) 8 0 +22 1
Karen Bisley (Canberra) 5 3 +3 =2
Sue Sellers (Toronto) 5 3 +12 =2
Steve Podolak (Belmont, Vic) 5 3 +6 =2
Darren McLoughlin (Wagga Wagga) 4 4 +1 =5
Pauline Markwell (Royal Sydney Golf Club) 4 4 -2 =5
Gerda Lambeck (Canberra) 3 5 -6 7
Candy Forrester (Cooks River) 2 6 -13 8
Sandy Tawa (Nelson Bay) 0 8 -23 9

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

There is no known tie break method.