If you are in Windows, this configuration generally is easier to set up with the video card manufacturer (Nvidia, AMD, Intel) configuration application, as they provide two ways of using your display:
- Extend the desktop in any direction (using monitors side to side or one on top of the other) including the task bar and the wallpaper.
- Extend the desktop workspace, keeping the task bar in the first display.
Either way will give you the possibility of having more workspace.
You can edit the way the virtual display is oriented relative to the monitors in physical space in the Display Properties.