OPNSense as wireguard client and route LAN split tunnel
Install and configure wireguard I use the Wireguard install script to create the config we import into the wireguard. That is located HERE
Generate your first wireguard config. After running the script above it will ask you for a client name, I would name it something relating to opnsense
Install Wireguard on OPNSense | System -> Firmware -> Plug-ins -> select and install ‘os-wireguard’
Get to wireguard config | Refresh the page, then go to VPN -> Wireguard