freeside-adduser - Command line interface to add (freeside) users.
freeside-adduser [ -g groupnum ] username [ password ]
Adds a user to the Freeside billing system. This is for adding users (internal sales/tech folks) to the web interface, not for adding customer accounts.
This functionality is now available in the web interface as well, under Configuration | Employees | View/Edit employees.
-g: initial groupnum
Base Freeside documentation