Aeeris bookbuild

Hi all
I'm wanting to apply for the Aeeris IPO (ASX - AERXBB) but it appears the only way to do so is through a bookbuild. I've never been through this process but it appears that I need to find a broker to bid on my behalf.

So far, I've found that that CMC can do this but I don't trade through them.

Has anyone bought any of these shares? Any advice on how to buy through a bookbuild?

Your advice is appreciated.