Jon,
When I remote with my chromebook my double screen at my office desktop is replicated on my chromebook. So all I am doing in the office is controlling my main computer with the chrome remote desktop, in a singular fashion, which works fantastically.
I am not sure. My intuition tells me I can only mirror the double screen desktop and not split AC/Updox using the singular remote desktop. I have not tried the 2x remote desktop and this may be the way to go to achieve AC on one screen and Updox on another in a secure possible fashion.
Indy!!!! Help!!!