Masking and Sharpen AI

I have a demo of Sharpen AI and I am not able to locate the masking tool. I watched a video of a guy who had version 2.0.4 and he was using the masking tool but I am not able to find it in the demo which is version 4.1.0.
I also purchased Topaz Photo Ai and I am not able to find the masking tool in that program either. Does anyone know where I can locate this tool in either program? The Photo AI program was purchased 2 days ago and should be the most recent.
Thank you in advance.

In the tools area there is an option for “Select”, it’s the third one down. Click to open. From there you can see the selected subject and refine.