VLAN setup

[gerflo09]

I like to create a second local net (LAN2), which is completely separated from our LAN, but some dedicated hosts in LAN2 should be able to connect to hosts in LAN and DMZ. All of LAN2 should have WAN access.

Our switch is able to do VLAN(tagged). VLAN is totally new to me, so - how do I need to setup opnsense, the switch and the hosts in LAN2?