Do Your Research Into The Directors of CMY, page-27

From page 16 of the latest activities report;

Future funding
At the general meeting held 30 November 2017, shareholders approved the placement to raise up to $1
million within three months of the date of the meeting. Of this capacity, $600,000 remains available.

Can someone please shed some light on what this actually means? Excuse my niaveness but struggling to get my head around how a future placement of $1m can have $600k remaining? Or is it implying when the placement takes place, out of the $1m placement $400k maybe foreseen to be being used i.e. for exploration/drilling etc??