Import users from a CSV (Comma Separated Values) file. The file must be a correctly formatted UTF-8 encoded CSV file with headers firstname,lastname,email (headers must be lowercase and without spaces) on the first row and values representing individual users on each row below. See below sample for correct formatting.

Sample CSV file contents:
firstname,lastname,email john,smith,john.smith@example.com jane,smith,jane.smith@example.com
Select CSV file from which to import users:
users successfully imported
The following rows could NOT be imported: