Hi all
First, thank you very much for all the information here, it’s been very helpful 
I am trying to build the following setup:
(hAP2 #1 AccessPoint) <—wire connection → (hAP #2 router ) <— mesh/WDS → (hAP #3 AccessPoint)
All devices need to broadcast 3 SSIDs for clients, each SSID needs to be both in 2.4 and 5G
The router is also connected to a modem
ports 2-5 on device #1 are on vlan1
port #1 on device #1 is connected to port #2 on device #2 and set as trunk
port #1 on device #2 is connected to the modem
ports 3-5 on device #1 are also on vlan1
all ports on device #3 are on vlan2.
Obviously, DHCP servers are all on device #2.
Now.
Using the great thread http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1
I have successfully configured Devices 1 and 2, and it works great.
The issue arises when I want to configure device #3.
When I try to create a mesh and assign the wifi devices to the mesh, I’m told that they are already part of a bridge.
So, they way I see it, there are 2 options:
Configure the WDS and not via mesh, or, remove the Wifi from the bridge, add to the mesh, and add the mesh to the bridge (?)
I’m not quite sure what’s the preferred and suggested configuration in such a case
Did not see how I specify VLAN tagging/filtering in a mesh
Thanks in advance