Studio - Displaying the Red Mask Overlay


I was wondering if it was possible to re-display the red overlay when using a mask in Topaz Studio.

When using the brush tool to apply the mask, I see the red overlay as I’m brushing. However at a later point I would like to be able to display that red overlay to see where I’ve masked. Am I missing a setting or button to display this.
Most other masking programs have this ability.