Resolved Only one problem trying to set up dual routers

I'm trying to set up dual routers on my network. The primary (existing) router I'll call Router 1 and the one I am trying to add I'll call Router 2. Below are the instructions I am trying to use. The instructions are easy to follow except for only one line that instructs me to add an IP into a field the author calls "Internet Gateway". I've never seen that term used in any router's setup pages or in any router's manual and a Google search turns up nothing that clarifies this for me.

The troublesome line in the instructions below is underlined. Here is a direct link to my router's manual and I have uploaded a PDF of my router's setup pages, redacted of course.

Router 1
Set up Router 1 as normal. In the Wireless Security settings of Router 1, disable Automatic Channel selection and manually set it to channel 3.
Router 2
Wire Router 2 to Router 1 via the LAN port.

• To prevent IP conflicts, disable the DHCP server in Router 2. This allows only Router 1 to assign IP addresses.
• Manually set the IP Address of Router 2 to 1 number higher Router 1. Example: If Router 1’s IP is 192.168.1.1, set Router 2’s address as 192.168.1.2. Make sure this address is out of Router 1's allotment of addresses for DHCP distribution. If not, make a DHCP reservation for Router 2's address in Router 1's DHCP table.
• Set the Internet Gateway of Router 2 to Router 1's IP address.
• Connect the two routers using a wired connection from any LAN port on Router 1 to any LAN port on Router 2. DO NOT use either router’s WAN port for this connection.
  
• In the wireless security settings of Router 1 and Router 2, disable Automatic Channel Selection and manually set them at least two channels apart - or any other channel not being used by the main router or any other router on the network. (It is possible to set up more than two routers for large areas).
• Set up Wireless Security to be identical in both routers.

 

Wouldn't Internet Setup be the reference to Internet Gateway?

 

Yes, that makes sense.

 

C:\>ipconfig | findstr /i "Gateway
Default Gateway . . . . . . . . . : 192.168.1.1