References can be placed into Groups (folders) that you create and name.
To create a group:
To rename or delete a group
To add references to a group
You can check your library for duplicates at any time by clicking Find Duplicates under the Organize tab. Any reference identified as a duplicate will have a yellow background. You can quickly select the Duplicates checkbox for all the references with the yellow background or select them individually then click on Delete.
When using Find Duplicates, EndNote Web compares references based on the following fields: