I'm looking for a way to mirror a virtual desktop (whether it be Missin Control or alternative). I want to be able to have a MBP (Yosemite) connected to an external monitor. I want 1 desktop on the external and another on the MBP. I want to be able to look at the desktop that is on the external monitor from the MBP so I can see what is on the external monitor but still have my own separate desktop to work privately. The external monitor is used to display things and occasionally I need to navigate to it to see what my client sees or dismiss something. The idea of switching desktops without showing the client my private view would be perfect. I don't think OSX supports this, but I figure there might be an application or another method of achieving the same solution. Thanks for your help!