How to setup VLAN for different services in MAP-3120? (Example on FGSW-2620PVM)

The MAP-3120 or MAP-3020 is with 802.1q VLAN and Multiple SSID (Virtual AP) support.
With this feature, it helps to divide wireless users into different groups for different services, say for example, VoIP and Internet Connection. In this Application Guide MAP3K_AppGuide6.pps, we will use the switch FGSW-2620PVM and MAP-3120 step by step guides you setup your network for different VLAN group and SSID.