TheHighSenpai

The simplest solution would be the best for me. If making printers etc communicate between routers then I'll leave them independent then. What would I need to do to configure a DMZ for the second router? Also I can't quite understand the concept of using a DMZ in this context.

So I need to know if the following solution is possible at my home: I intend to have a ISP provided Router connected to the wall and a secondary router connected to one of the 4 Ethernet outputs on the rear of the 1st router which will have a VPN configured on it so devices in my household can choose to access the internet with/without a VPN by switching the network they're connected to. Both modems will have WiFi enabled. I've attached a diagram if that helps. Would this be possible to configure?