I did it and it looked like this: I adjusted the css so that the modules were adjusted to the screen but the menu was down.
You should download a copy of the manual, I think it will answer a lot of your questions. You can get it for free since you are a HTF supporter. Welcome to ISPConfig by the way
I have the 2016 manual, sorry, but I didn't find the item in the manual. I will check better next time.