Order of citations in a footnote.

Ok, I have been searching help and the databases and can’t find anything to help me with this.  I need to know how to change to order of citations in a footnote.  I am using X5.  When I go to EndNote X5 Edit & Manage Citations window, I use the up and down arrows to change the order of citations in a footnote, but when I click ok, nothing happens.  What am I doing wrong here?  To be more clear, I have three citations in the footnote.  The citation I want to go first is last in the citation and I can’t seem to change the order in which they occure.

Thanks

Yes, it matters a great deal with this footnote and my publisher doesn’t dictate order for footnote entries within the same footnote.  I am using footnote format for mine, not Bib format because I had to alter the style a bit for the publisher.  It’s Chicago 15th.  I’m not seeing anything in the style edit options to make it so I can change this.  I used to be able to do this easily in early itterations of the program.  Not sure why this was changed.

Wait, I figured it out!  It was the “sort order” option on Citations in the edit style section!  Your clues helped a lot in terms of what to look for!  Thanks!