Windows 8.1 Lock Screen Background

[JoeHammy7]

I'm running windows 8.1 Enterprise with dual monitors and am curious if anyone knows if one is able to extend the Lock Screen background image onto the second monitor. I have the regular screen settings to landscape mode and was able to instill 2 different pictures on the backgrounds when the computer is in use, but I cannot find anywhere if Windows 8 has the ability to do the same thing for the lock screen. I am working on a work PC, so I shouldn't download any 3rd party apps...anyone have any ideas??