Medibank Prospectus Details, page-115

Worth noting that according to prospectus that JLM's can take back up to 20 percent of broker firm allocations during the pricing period.
This means you may be allocated say $100k on broker firm and then during the insto pricing period they decide to claw back 20 percent of broker firm.
You then end up with $80 k.
Not the end of the world but worth considering when you submit your broker firm bids.