The account can be created using the following command
username <username> privilege <privilege level> password unencrypted <password>
The privilege level of the user. Valid range is 1 – 15. User's privilege should be same or greater than the group privilege level to have the same access as that group.
•15 — Generally an administrator account; that is, the user is granted full control of the device. User can access all groups and perform system maintenance (software upload, factory defaults, etc.).
•10 — Read-write access. Generally used for standard user accounts.
•5 — Read-only access. Generally used for guest accounts