Hey man Aus community isn't large enough to support dedicated proam teams. What we usually do to organize games is to get 10+ people in group chat nominate 2 captains who then do a school yard pick of remaining players.

Here's a good write up one of our mods did last year -
http://gtm.steamproxy.vip/groups/AusNBA2k16/discussions/0/412449508276972636/