I'm using Ultiboard to lay out a board that uses a copper area for ground plane. The ground plane doesn't cover the whole board, so I've created a copper area in the desired outline, selected 'Shape to Area', and connected the copper area to the desired ground net. In my design, there are some nets that may have a high voltage (400V) to the ground net, while others are only 5V logic. I want to make sure that the ground plane void areas around pins connected to high voltage nets provide sufficient clearance. I've put the high voltage nets into a net group, but changing the net group's trace clearance doesn't seem to change the void clearances. How can I change the size of the void areas around pins? Is it possible to make it so that some nets have higher void clearances than others?
