Ahh, "A premade backup config file, to be ULed to the router, can be found at Dynalink DL-WRX36 Askey RT5010W IPQ8072A technical discussion - #670 by NicholasKK"
That sentence made sense now, once I had the context of reading everything about enabling SSH.
If it read as follows it would make more sense to a first time reader :
Enabling SSH access is described at Dynalink DL-WRX36 Askey RT5010W IPQ8072A technical discussion - #365 by luaraneda but you don't need to do this since, A premade backup config file, to be ULed to the router, can be found at Dynalink DL-WRX36 Askey RT5010W IPQ8072A technical discussion - #670 by NicholasKK