The file is located in this folder:
%ALLUSERSPROFILE%\Autodesk\Vasari 2014\Family Templates\<language and local>\Conceptual Mass
The Conceptual Design Environment opens. For instructions, see GUID-A3097388-C28F-4425-877A-406038BCD55F.htm#WS1A9193826455F5FF-7F10494411F03A24F24-6CEC and Forms.