How do I keep my Team Viewer active on my work computer, while I am away?

I work remotely two days per week, but when I go to sign in/access my desktop with Team Viewer the morning of the days that I am working remotely, it tells me my work computer is not connected to Team Viewer. I will then have my coworker log into my computer to simply "awake" my computer and it then allows me to access my desktop without them having to touch the Team Viewer program. 
I've also made sure not to turn my computer off and left Team Viewer logged in as I left the office, but I’m guessing after a while Team Viewer logs itself out. I'm sure there has to be a setting for something like this?

Thanks,
-Lauren