How to Add a Single Field to Existing Users

Question - a customer asked:

"I would like to import a single field of data into the General Tab - Location field.  The users are already created, I just want add to the location field with a barcode number which are all different.   Can this be done and how?"

Answer:

Yes, this can be done by:

1. Modify the existing .CSV file used to import the users to add a new column that contains the unique barcode number.  Label the column "Barcode".
2. Use the steps in How to populate additional fields to complete the modifications.