
You can add or remove a reference from a folder one at a time from the Edit link, from the View link or when you manually add a new reference.
You can add groups of references to folders from any of the view options - View All References, View by Folder, View Duplicates (Exact or Close), and Search Results View.
To add references to a folder:
From the Put in folder list, select the target folder.
The references are added to the target.
To remove a reference from a folder:
Open the folder.
Select one or more references (as described above).
Click Remove From Folder.