Change LAN IP on Plusnet Hub Zero 2704n?

[#1]

Using a work VPN and works network is on 192.168.1.x lan. Plusnet router lan is on the same network.

I wish to change my plusnet router lan to at 192.168.0.x 

I've logged into the router but there is no where to change the lan? Can this be done on this router?

[#2]

This should open up more settings: http://192.168.1.254/expert_user.html