How do I set the name for a user?
When you add a new user you are only prompted for the user's email and their permission level
The user will be sent an email (assuming you leave the 'Notify by email' option checked) with a link to finish setting up their account.
They will set up their password and name at that point.
If a user skips setting their name then they can edit it at any time when signed in by clicking on their email address in the page header
This will take them to their profile page where they can modify their name