Hello Kelvin,
Welcome to Communities.
You are not searching aimlessly, unfortunately this feature is not (currently) present in the HTML5 Client - out of personal interest I will *try* and find out out whether this is pending and or not being implemented but I will give disclaimer that I likely will not be able to divulge said info unless I have something public.
So for now it is Flash Client or CLI+MOB for configuring such devices.
Bob