To edit an existing user:
Enter a new name in the Username text box.
Enter a new password in the Password text box. Acceptable characters include the "printable" ASCII characters from 32 to 127 (0x20 to 0x7F).
Enter the same password again in the Confirm text box (Password and Confirm must match to create the user).
Select a new level in the Level drop-down box.
Click OK to accept changes and return to the Security Administration screen, or Cancel to return to the Security Administration screen without saving changes.