output style numbering

I’m having problems getting Endnote X4 to number the citations the way I want in my paper.  This is what I want -

All these references talk about the same thing (superscript) 1-4

This is what I have now - 

All these references talk about the same thing [1,2,3,4]

I understand how to get superscript references, but I don’t know how to get 1-4 instead on 1,2,3,4.

Thanks!

Ah!  Thanks for the attached GIF, I still had the grouped references box checked.