Aircon belt

[Manbeast]

Hi All - what is the steps needed to replace a broken aircon belt on a 2008 VXR8? Its thrown itself and got snagged and its snapped. I'm aware there is a longer term fix for this but if I wanted to replace the belt quickly is it something I can do myself? I'm unsure of best approach to get a new belt on behind the existing belt and what to remove? I've attached an image if anyone can explain? thanks.