The best thing you can do is take one port off the bridge and do your config from there, a safe spot.
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Take ether5 off the bridge at /interface bridge port
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Make the following additions/mods
/interface ethernet
set [ find default-name=ether5] comment=OffBridge5
/interface list member
add interface=OffBridge5=LAN ( and trusted if you have a management interface list )
/ip address
add address=192.168.77.1/30 interface=OffBridge5 network=192.168.77.0
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Now you can plug in your laptop to ether5, change your ipv4 settings to 192.168.77**.2** and using winbox access the router as per normal.
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Now you can start configuring your router for vlans such as guest, home, iot, media, anything else, and any other vlans aka printer vlan, or spouses work vlan, or kids vlan etc.. THe idea being you dont want vendor equipment and work and home mixing with anything else,just internet access, etc…
This is a good link to read first for vlans.
http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1