The next Sausage Sizzle will be on the 4th July 2018 at Bunnings Rocklea. The events page has an button for that day that will enable you to sign up and indicate when you can come and help. Otherwise there will be a whiteboard at the Shed to fill in.
The later Sizzles are on August 15, September 12th and 17th October and will appear on the events pages nearer the time.