VLAN ON ROUTER BOARD 532B

hi guys
well my network is working fine, but i wanted to do vlan,first let explain how the network diagram,i has three APMT523b which cover 360 degree and each has different ssid but what i did is just bridge on it because want the client to using public ip,no nat,and again my switch is dlink 16port with live traffice of 3meg,and on each AP i have 12 client x3=36 client on the location and i did ptp from my provider is working fine no problem,but wanted to to vlan just reduce the traffice on swtich pl i need ur help
thanks

Bridged interfaces will pass VLAN traffic between clients devices and VLAN management devices,
http://www.mikrotik.com/docs/ros/2.9/interface/bridge

pl if u can explaint more he sholudbe ok