How to make a transparent subdomain?
 

Hi there,

I'm creating the room geometry in Standrews.png and need to include some subdomains for calculation purposes. However I have added these as 'frozen' and consequently they interfere with geometry that is 'cut out' from the main room ie a manequin (see crossection.png and plane2.png). I want the manequin to be empty, how can I achieve it?:)