ZBrushCentral

Dynamesh Add / Sub / And buttons

Hi, I’m trying out the: Dynamesh Add / Sub / And buttons. Looking for (tutorial) steps to get the"Sub" button to work.
The dynamesh is only adding inserted geometry when Sub button is used.

Watch Modelling A “Radio” part 1 and 2 by Joseph Drust here.

exactly the info needed, Thanks!