The admin interface for Barcode Completion is located under Administration → Local Administration → Barcode Completion.
The barcode completion functionality is available at the following interfaces.
Barcode completion is also available during check out if library setting "Load patron from Checkout" is set. (Automatically detects if an actor/user barcode is scanned during check out, and starts a new check out session using that user.)
Barcode Completion does not work in the Search for Patron [by Name] interface.