EndNote X9 offers users the option to share your entire sync library with up to 100 other users with EndNote X7.2 or later. Library sharing provides entire teams with immediate and real-time access to an entire EndNote library, meaning the same set of references, attachments, notes, and annotations. Changes are sent and received via sync, so all members of the shared library need to have updated to X7.2 or later, have the desktop activated with sync preferences completed, and be connected to the internet in order to send and receive changes. Library sharing is recommended as an alternative to saving a library on a shared drive, or emailing a compressed copy around to a group of collaborators.
Go to Library sharing in EndNote X9 (Opens a new website in a new window)