Nod, I can't really "google up" anything of use, other than that they are pollinated by insects - (what a surprise).
If you want to search a bit yourself the botanical name is Actinotus helianthi. I grew up in Sydney on the south side where they were then common enough in the sandy bush around our area, congrats on trying them up here.
I should just use a soft paintbrush (kids art brush style) to try to move pollen from one flower to another, both mornings and afternoons, just tickle round and see what happens.
I do read though that propagation from seed is a bit sporadic though cuttings sometimes work and now they are tissue culturing it (there, you may have a purpose to go further with that).
Since they are being trialed for the cut-flower industry most of writings seem to be slanted that way - I found an article by the australian government on commercial propagation but can't seem to post the link.

Thanks Alison, I will search further myself. I tried cuttings. Probably didn't try too hard but found I was successful with seeds.

The plants have to be 3 years now and soon to flower. I intend posting photographs and reporting on the process of getting them to that stage for anyone who might be inclined.

Probably a week or two.

Nod

Nice to see you've had some success with them, Nod. I haven't tried them where I am (NSW Northern Rivers).
B.