changing the reference format in Microsoft word

I currently am using Endnote on a word document on my Mac computer. When I try to change the format to ‘numbered’ instead of ‘author-date’ or some other format, it will not change. Does anyone know how to fix this? 

If you made a change and saved as to a new output style file name (recommended) then you need to also change the output style in the Word Document.  

In any change that you will make always click save button because if not whatever changes you will made will never be applied unless you save it.