You may have already created and saved a search strategy to find a subset of references. Rather than run the search again each time you enter and edit references, you can use the saved search strategy to create a smart group.
To create a smart group from a search strategy:
Click on All References to display all references in the library.
In the Tabs panel, click the Search tab.
Click Options, and then select Load Search.
Locate, select, and open the search strategy to load it into the Search panel.
Click Options, and then select Convert to Smart Group.
A Converted Search group is created and stored as the first group in the next group set. If you searched all references, the Converted Search group will appear as the first group under the first custom group set. If you searched a group subset, the Converted Search group will appear as the first item under the next group set. You can drag-and-drop the smart group to any group set.
The smart group will be updated with matching references each time you save a reference.