How to set up a router in a hotel room?

How to set up a router in a hotel room: Router B is used as a switch.

note: router a= main router; Router b= secondary router.

1. router a is set normally.

2. How to set up router B:

Note: Disconnect the connection between routers A and B first, and then connect after router B is set up.

① firstly, the wan port should be cleared, and all wires should be connected to the lan port.

② turn off the dhcp service of route B ..

③ modify the ip address of the lan port of route b (not the same as the network segment of router a), and modify the IP to 192.168.2.2.