Setup: These steps were performed OpenWRT 19.07.3.
Context: The goal of this is to set up a virtual network where clients can switch from 1 network with a wireguard VPN connection to another without a VPN connection easily. VPN termination is to the router as opposed to the client. This may be useful for setups such as on insecure networks, while still wanting the ability to switch between the 2 at your leisure.