You can share your EndNote 20 desktop library by selecting Share from the File menu:
Enter the email address of the user/s you wish to share your library with.
Set their permissions ("Read & Write" or "Read Only").
Add an optional message to accompany the invite > click Invite > Close.
Note: Since sharing relies on EndNote 20’s synchronisation ability, all users accessing the library must have an EndNote Online account and must have signed up for it from their EndNote 20 desktop. The sharing feature works with the email addresses users have signed up with.
Accept a shared library invitation
If you intend to accept an email invitation to join someone else’s library:
In the File menu, select Sync and follow the instructions to log in or set up a new account. Alternatively, select the Sync button on the EndNote Library Window toolbar.
When connected, select File and then Open Shared Library.
You can now add references to, and annotate, items in the library, even if others are using it at the same time.