ruckus/smoothwall guest access

[sted]

at one of the schools i support they access the internet via a smoothwall (which i have no access to and have to email/ring to get changes made on it). Ive got the isp to give me a range of ips that have a transparent proxy applied and dont have ssl inspection turned on (so no certificate needed on the devices). Is it possible to create an ssid on ruckus that will dish out just a specific set of ip addresses if so how) i assume worst case i could vlan it off and set up a dhcp server for that vlan but that seems overly complicated as vlans arnt something ive ever really needed to deal with