Firewall rules

[smjk767]

Finished settting up first OPNsense firewall.  Followed the NordVPN guide to have always on VPN.  It's a home network and I would like to block some internal fixed IP addresses from accessing anything outside the home LAN, even through the VPN. I have tried many variations of firewall rules while testing and nothing ever gets blocked.  If I want to stop all traffic from 192.168.0.50 from leaving, what/where do I put the rule/s.