Set each router's DHCP to give out the addresses you want. The user manual tells how to do that, if possible.
Do you know about subnets?
I have 2 routers, and I want to have two separate ranges of IP addresses for different groups of devices.
Group 1: 10.111.114.XXX
Group 2: 10.111.122.XXX
What is the best way I can use to accomplish this?