There are 3 ways to share an EndNote library. Each way requires one "admin" team member to oversee the shared library.
Note: You cannot share and use a desktop library on cloud services such as OneDrive or iCloud. The library will become corrupted.
Desktop (concurrent) sharing requires the "admin" to have an active EndNote Online account
Online (concurrent) requires "admin" and collaborators to have an active EndNote Online account
YouTube clip on the different ways to concurrently share a library
If the administrator wants to use a new library, the administrator must reset the sync and empty an existing EndNote Online account ready for collaboration.
View the YouTube clip on sharing a desktop library
Administrator make a compressed EndNote library for emailing to collaborators.
Use EndNote version X9.3 and above
Compressing a library instructions
Uses the EndNote Online platform to share references from a desktop library. Collaborators use a group of references from the online library. The administrator continues to use the desktop library and collaborators only see the shared references using the online account.