Thanks you for your answer. I can assign an individual network to the ethernet port now. If I follow you that mean eth1 is the WAN ports then. I added it on physical interface under the lan.
However, I can't communicate between the two VLAN. On legacy I could make equipment on VLAN 1 (192.168.1.0/24) communicate with VLAN 2 (192.168.2.0/24).
Both network interface are on the "lan" zone., so the firewall shouldn't block them.
Additionally, I tried setting up WIFI and selection lan_p as the attached network. It has a DHCP with a pool of 8 adresses but I can't seems to connect to it