[Support request] Use my HUION tablet

I would like to use my HUION tablet and be able to write in the puzzle boxes on screen similar to how the professor does it in his lessons. How does the professor accomplish this?

Here is what I would like to be able to do ……. just as the professor does in his lessons.
1: Place a puzzle on screen
2: Using the tablets pen make/erase pencil marks
3: With the pen fill in a box with its correct number
4: Be able to save and restore a work in progress puzzle