This is only angle I managed to get but it looks a bit different to the Slender Skimmers in NSW so wondering if it might be O serapia?
Found in Tindale reserve
In a swarm, orbiting around other members of the same species, probably breeding. Organism was released back into the wild after.
Dragonfly inside local supermarket
Distant photo - recording what was found here.
Apologies for quality of pics!