Second router as a wireless access point

Does the new TT Super and Fibre router support connection to a second router configured as a wirless access point?

I'm aware of a previous post on how to do this from 2013 (http://www.talktalkmembers.com/t5/Computers/Setting-up-a-second-router-as-a-slave-on-your-network/td-p/800353 ) but this question is about the new TT super router.

Our attic doesn't get any signal from the ground floor, so with our current set up I've run an ethernet cable up there and connected the modem router to a second router (configured as a 'slave') to provide WiFi and wired connections to a NAS, printer etc.

Thanks