RB751G-2HnD as swtich with multiple WLAN SSID's on VLANS

I have a RB751G-2HnD
Now it is default a router
Wan on ethernet-1 and switch on ethernet2-5

I want ethernet1-5 setup as switch.
So no router of firewall but all ports as switch.

I want 2 SSID’s and each on his own VLAN
SSID: BB_A on VLAN id 121
SSID: BB_B on VLAN id 122

How can I do this?

Yes
Create vlan
Create bridges
Create Virtual ap
Put ports un bridge

And mkt magic

Envoyé depuis mon GT-I9300 avec Tapatalk

Thanks,
Sounds logic.
But how?
First I must make all ports part of the swicht.
Now Ethernet1 is configured as WAN port

So how to start??