Ubiquiti Unifi Define Default VLAN for Dynamic Wireless VLAN Assigned Networks

This video is a follow on to a previous guide around using RADIUS to enable dynamic VLAN assignment to a Unifi wireless network (https://youtu.be/wJvv7qw0HAQ). Here I demonstrate how to change the RADIUS configuration to assign undefined users to a specific VLAN, so they do not end up on the default/untagged network. .