The username is defaulted to the first letter of your name followed by your surname, or the same format followed by a number if there is someone sharing the same initial and surname.
Example one:
Jsmith for Jenny Smith
Example two:
Jsmith2 for John Smith
Note: Your username is set-up & supplied by your preLink Administrator. Contact the local administrator if you having trouble entering your account with it, and/or are unsure of what it is.