graphics setup question
You must set the resolution to your desired window size (smaller than current res gives a smaller section) then you can toggle with alt + enter in and out of full screened/ windowed mode. There is also an option you can set in the drop down to be windowed.
This allows the interaction with the rest of the monitor(s). Windows key + D will minimize all windows (including gw2) if you need whats under it.
Press F11 for options
Select the second tab down for Graphic Options
Select “Windowed Fullscreen” for your resolution (first dropdown)