I have experimented with absolutely every possible scripting option I can find on the web, and no matter what I do I cannot move a FaceTime window to my secondary display.
This works...
tell application "System Events" to tell process "FaceTime"
tell application "FaceTime" to activate
tell front window to set position to {3600, 500}
end tell
but with one fatal flaw that it always stops dead in its tracks, at the right edge of display #1 (the left display).
If I set the X coordinate to anything less than 2560 (my width on both screens) then it works perfectly, but any attempt to move it further to the right, and thus onto display #2, will not work.
I don't know if it's related, but my primary display is an external Dell, and my secondary display is the built-in display of the 27" iMac. Dell on the left, iMac on the right.
Interestingly however, if I manually drag the window onto display #2 and run the same script above, then it positions correctly onto display #2. It seems that the numbers are relative to whatever display the window is CURRENTLY on. How can I get it to absolutely position the window onto display #2?