Configure gate and manual VLAN trunks

1. On FortiSwitch, go to Switch > Port > Trunk and create the following four static trunks:
   1. One on port 1 (Gate-trunk)
   2. Three on the remaining ports 2, 3, and 4 (Manual-Trunk-Portx)
2. Go to Switch > Interface > Trunk and configure the trunk's native and allowable VLAN settings:
   1. Set the Native VLAN for each trunk to 1.
   2. Assign each trunk the native, voice, and data VLAN (1, 100, and 200).