Unifi guest network (VLAN isolated)

Hi,

I want to create a guest network isolated from my main network. We are a small company so we dont use VLAN, our switch (not ubiquiti sadly) supports but all ports are 'Untagged' and we use pfSense as firewall. My plans are:

• Create the guest ssid in VLAN 2 on the controller
• Create a VLAN over my currently network interface on pfSense and create the apropriate rules, including a DHCP server only for this VLAN)

Will be this enough? When the switch receive the VLAN2 tagged packets it will redirect to all ports of the switch?

I am really new to VLANs and tried researching (including here) but I am not sure yet.

TYIA