Edit Desktop Username

I would like to be able to edit the desktop username, rather than having to create a new user, using the old as a template.

When I go to System > Setup Users > File Maintenance > lvl 3 password and look at a user, for the purposes of data integrity, I want to update a user’s username (from ddastrup I want it to say DallinD). I want that existing user’s data history, employee details, etc. If there was an option to either “Rename” in the top menu, or if the username field was editable, either would work for my purposes.