HOW TO OPEN EXCEL FILES IN SEPARATE WINDOWS
How to open Excel files in separate windows on two screens. This happens by just grabbing and dragging the file onto the other screen when using Microsoft Office 2013.
But if you are not ready to upgrade here is what to do.
To open Excel files in separate windows:
1. Open the first file and place it on the screen you want it on.
2. Next using the Excel icon open another excel file. It will open on top of the first file.
3. Drag it to the other screen.
4. Now drag the icon for the second file into the new (blank) Excel document.
That is it, you should now have two Excel files open in separate windows.