Answer:
He should move it to the side until there is almost a ghost image of a square like thing.
Step-by-step explanation:
This is how you minimize stuff, except with a bit of your computer screen showing. Again, this could be wrong. The other answer to this would be that he clicks the two boxes at the top right hand corner of his screen. There are so many unsolved factors to this, such as..
1. What OS is he using?
2. How does he want to view the rest of his computer?