WA has had an "R" licence for years.
It is mainly aimed at people who have to disconnect & connect things like hot water systems with electric boosters,& so on,but Electronics workers also could get them.
The licencing authorities suddenly realised back in the 1990s that Electronics workers didn't just work on battery operated "transistor radios",& had a bit of a panic.
My employer sent a few of us to get "R" licences.
It was very easy,just a few days at TAFE ---mine allows me to "disconnect/reconnect fixed wired to 1000v,limited to like-for-like replacement of motors rated at not greater than 22kW,solenoids,pressure switches and LV-ELV Isolating transformers"
Interestingly,my old card says I have a "Disconnect & Reconnect plus Appliances Licence"
The current one is just a "Disconnect & Reconnect Licence",so I've been shortchanged!
It is supposedly "for restricted electrical work in association with Communications/Computing Equipment"
I don't know of much Computer gear with 22kW motors!
There were mutterings about a Federally based licence a few years back,but I think that died!
Actually looking at your link that was probably "The national restricted electrical licence (NREL) system" which they were referring to.