I am using a modified style for my bibliography. I am also working across two computers. I can sync my library, How can I sync my modified bibliographic style?
Only by copying it or emailing it to the other computer and opening and saving from EndNote.
This actually is one kind of folder location you could point to on a cloud drive though. Change preferences of each desktop version of endnotes styles folder location to point to a google or dropbox “Styles” folder and move your user modified styles there. Newly modified styles or downloaded styles would go to the same place.