I've connected the ap to port 3 on the Cisco switch.
configured the port n the switch to have vlan tag 10, 20 & 30.
on the ap, created a e wifI ssid, changed the config to be manual vlan tag of 20.
on my dhcp server created an ip scope of 192.168.20.0/244 but don't know how here to link this to the vlan 20