changing the format of a list of references in Word

Hi, I’m new using EndNote. I have to edit the CVs of 50 faculty members, changing the format of their list of publications (and each one has a different format - list of published papers). I have all the files in Word format.

Is there a way to do it using EndNote? I tried to do it selecting the list of papers published and clicking in " Edit & Manage Citation" but it always says “this document does not contain any editable citations”

I’m freaking out because if I  have to do it manually it will take years since each professor has more than 200 citations. 

Please, help me.

Thank you,