Working Area problem with multiple displays

Hello, I recently bought a Kamvas 16. I would like to use the tablet as a secondary display to draw while my main monitor displays anything else i want/need. However, I cannot set the working area of the tablet to actually be my tablet's display-it defaults to my monitor, and will not let me move it, which honestly defeats the purpose of having a screen tablet in the first place.

I've tried various configurations in windows' display settings, read through the FAQ and various forum posts here with the keyword 'working area', checked for driver updates, even switched which port the tablet and monitor were plugged into just to see. Nothing. It's very frustrating. 

Any idea what I can do? Attached a screenshot to hopefully make the problem more clear.