Underwiters take up of shares

I wonder what the conditions are on the terms for the underwriters to take up the shatres that have not been taken up by the disgruntled shareholders. For example: would they have to take the shares up @ 6.5 cents if the share price droped to 5.5 cents for instance and suffert the loss with out complaining.m Could they reneg on the contract if the share price dropped under 6.5cnts and if soi what would be the result of the result of the financial position of the company and would the company be then trading while insolvent? Or would the AGM be postponed again and then what would ASIC and the ASX then be asking the questions we want to hearm and put the Company into a trading halt AGAIN and instead of a takeover be then wound up?