This will move the physical location of the window and define where it pops up on screen.
Following is taken from the Prepar3D guide on panels, section Panel Configuration Files.
(http://www.prepar3d.com/SDKv2/LearningC ... Center.php)
position
Specifies the relative position of a panel window to the main window. A number from 0 to 8 (as shown below) designates the position of the panel window. If nothing is specified, 7 is the default, otherwise, one of:
0 = upper-left corner
1 = upper-middle side
2 = upper-right corner
3 = middle-left side
4 = middle
5 = middle-right side
6 = lower-left corner
7 = lower-middle side
8 = lower-right corner.