The info is out there but to save you time, he's the rundown on my two monitor setup.
Monitor setup files:
the .lua files for your monitor setup that provide the in game options reside at <install path>\Config\MonitorSetup\. D:\Program Files\Eagle Dynamics\DCSA-10c\Config\MonitorSetup, for example.
I copied one of the existing profiles as a template and came up with this:
_ = function(p) return p; end;
name = _('2 Monitors');
Description = 'Two monitor configuration';
Viewports =
{
Center =
{
x = 0;
y = 0;
width = 1680;
height = 1050;
viewDx = 0;
viewDy = 0;
aspect = 1.6;
}
}
LEFT_MFCD =
{
x = 1680;
y = 105;
width = 700;
height = 700;
}
RIGHT_MFCD =
{
x = 2640;
y = 105;
width = 700;
height = 700;
}
UIMainView = Viewports.Center
In Game Options:
Turn off "Full Screen."
Manually type in a resolution that is the combined resolution width of all of your monitors and the height of the whichever monitor you want to see the cockpit on. For example two monitors running 1680x1050 would be a combined 3360x1050. I have a left monitor that is 1680x1050 and a right monitor that is 1920x1080. I want the cockpit on the left side and the two MFCD on the right side, so my manual resolution entry was 3600x1050. Aspect Ratio should adjust automatically.
Finally, if you did everything correctly, you should see the monitor profile that you created in the dropdown list for "Montitor." It should show up using whatever you entered into the name= line of the file.
You'll want to adjust the numbers a bit to fit your needs. Specifically the x and y entries which denote the location of the upper left corner of that item. Just remember that the x attribute includes the entire width of both monitors and you should be fine.
-dr