Where do i find the 'selection' brush in the latest version of Topaz Photo?

The preamble when opening the latest version states that i can select which parts of the image i want the changes to apply to - and i have the perfect image to try this on! But where is this fantastic tool hidden?
Thanks for your help.

The bird was selected automatically by autopilot as the subject of this image. However, some parts have not been selected, so I can use either the regular or the super pixel brush to add to the selection.

Thanks - i found it! Works perfectly! Wow - so cool!