Assuming the router for
192.168.9.0 network is the same as
192.168.1.0 network, you need to define a static route on your router to access the 192.168.1.0 network. The gateway is your router IP in
Being already there, you could also define a static route for
192.168.9.0 network if you need it.
Edit after comment:
If the main router is the pc, the wifi router is connected to it wired (wan port probably) so you need to set the static route on the PC and use the wifi router ip (in 192.168.9.0 network) as gateway.
If you want all your ips in the 192.168.9.0 network, you can connect the wifi router to your PC using the LAN port instead of the WAN port and disable DHCP on it.
To do that you need to:
1st screen - Internet IP address: use get dynamically from ISP
3rd screen: use IP 192.168.9.101 in LAN TCP IP setup (not sure it is needed but it won't make any problem)
3rd screen: disable use router as DHCP server
Unplug the wire from WAN port and connect to any LAN port
This way the netgear wifi router will receive an IP from the DHCP (PC) and will forward DHCP packets to and from the wifi devices so they will receive an IP from the PC too.
All the machines will be in the same subnet and you will be able to connect any machine to any other (including printers or other devices) without using a more complicated setup using 2 subnets.
192.168.9.0 doesn't mean the ip of the router but the subnet 192.168.9.xxx