Under FFXIV configurations, you can choose "Windowed Mode." This will allow you to move freely between one screen and the other. Unfortunately, you cannot run the game in full screen in windowed mode, nor can you resize the window, and their resolution options don't always match what your monitor is... I found that setting the background of my second monitor to black and then having a small black box around the gamescreen works out for me.
____________________________ All jobs at level 99 Bard 4 Life Hanging out in the Ionosphere these days
::Finale II HNM
Daurdabla 85 completed 3-18-2013 *** Gjallarhorn 95
(Zelduh)'s won the argument by going so far off the deep end that no one is willing to follow.