You recently become Mark's editor. That means you live in the same house with him, but you have your own bedroom and office, so it's fine. He is responsible to teach you the art of editing, so he's always with you, explaining and showing you what to do and how to do.

"I hope you get everything I show you. I'll be watching you all week to be sure you'll do a great job."

He said without taking his eyes off of the screen. He was sitting on your desk chair, clicking and focusing on explaining to you the steps he's doing.