Use the Picklist Manager to edit existing picklists, view where they're used, or delete them from your site.
To access the Picklist Manager, open the main navigation menu and go to Administration > System Configuration > Picklist Manager.

Click Edit under the Action column to update the following details of a picklist:
Click Where Used under the Action column to view a list of all locations where the picklist is in use, including:
Click Delete under the Action column to permanently remove a picklist from your site.