Fitting rock wool in interior walls - how to fit pre boarding?

[DownSouth]

We’re getting a plasterer to board out the internal walls while we get on with other jobs. 
After some advice please on what’s the best way of fitting it within a stud wall so that it’s still in place when the plasterer comes to board out? Any top tips? 

[nod]

Let him board one side of the studs and ask him to bugger off downstairs while you fit the insulation A few staples will hold it in place till he gets the second side on