I have the same issue using the new Microsoft Surface RT. It comes with Office 2013 already installed. I have posted this problem on the Surface Forum Website. Here is the URL: http://www.surfaceforums.net/forum/microsoft-surface-general-discussion/1955-microsoft-word-surface-rt-citation-styles-limitation.html
I would like to use the Chicago Style for footnotes, which I have already done on Office 2010. I have found some directories to put the Style into, but they don't get recognized by Word. These directories include:
1) C:\Users\user_name\AppData\Roaming\Microsoft\Bibli ography\Style
and
2) C:\Program Files\Microsoft Office\Office15\Bibliography\Style
3)C:\Users\"User"\AppData\Roaming\Microsoft\Template s\LiveContent\15\Managed\Word Document Bibliography Styles .
I'm thinking that the CMSfootnotes style needs to be updated to work with Office 2013
Making this work would be fantastic, since I hate having to use another machine just to insert a citation.
Thanks