Hi there dimitri,
What you are asking to do is very explained in this article.
You only need one bridge and simply make as many vlans as you need to carry traffic.
vlan10-home (home traffic)
vlan20-guest (guest traffic)
vlan30-devices (device traffic, thermostats cameras etc)
vla40-media (NAS, firestick, appletv etc).
http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1
Define each vlan with interface being the bridge
Each vlan gets four things: IP pool, IP address, dhcp server, dhcp server network
Assign Bridge ports settings (trunk ports to hapac devices carrying all the vlans you want to send to the hapac)
Assign Bridge vlan filtering settings
Adjust firewall rules
APPLY bridge vlan filtering enabled as last step