Groups act as folders to organize your citations within EndNote. You can create groups for a particular paper/project, or for a particular aspect of that project. When you create a bibliography, it uses every citation in a chosen group. You may put a single citation in multiple groups. Groups can also be shared with others so you can collaborate using the same set of citations.
To create a new group:
Your group will now show up on the left hand navigation of the My References tab.
By default, citations added to EndNote without selecting a particular Group will be added to the [Unfiled] group.
To add one or more citation to a group:
Once added to a group, citations will be removed from the [Unfiled] group.
Citations may be added to more than one group.
To remove a citation from a group, select the checkbox in front of the citation, and select the Remove from Group button. The Delete button will delete citations from your EndNote account, by adding them to the Trash group, until you Empty the trash.
To share citations with group members, you will want to share your group.
Your group members will now see the group under the Groups Shared by Others heading at the bottom of the left panel on the My References tab.