From https://cfasydney.com.au/6-a-side/

Times: first games kick off at 8.00am. This is an all-day event.
Rules: 7 players per team, interchange, 10 mins each half, no offside.
(Full rules available at www.cfasydney.com.au documents page). Each team will play a minimum of two games.

Boys/Men/Mixed Under 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, All Age Men, O35
Girls / Ladies  Under 9, 11, 14 , All Age Ladies
Cost: CFA Sydney affiliated clubs – no charge, all other clubs $70 per team.