The following rules apply when creating a TYPO3 backend user:

• The username consists of the first letter of the firstname and the full lastname. E.g. Steven Walling would have a username swalling.
• Usernames must be unique. If the username already exists, an alternative name will be defined.
• Usernames are always personal.
• Every user is assigned to one ore more user groups.

The following data is mandatory for creating a new user:

• Full name (first name, middle name, last name)
• Email address
• Mobile number / Fax number (international)