I would like to create customer accounts for a large number of customers. I know that I can do that by entering their emails into the add customer area, however, I would like their user name to be in the form [firstName] [LastName], rather than their email address or a random mix of letters and numbers. I can go in one at a time and edit them, but I would like to find a way to either create the customer accounts with the username and email address from a csv file or at least be able to manually update the database with the usernames. Can that be done?