It was like a spider ballet. The two visible ones held odd poses and moved around. But can you see the hidden one? I don't know if they are all the same species or different. They were on a Silver Wattle so quite small.
it looks somewhat like Cetratus rupropunctatus https://www.arachne.org.au/01_cms/details.asp?ID=2181 these are probably juveniles being small and together