It is intended as management for the router/switch, the VLAN enthusiasts suggest the use of a separate VLAN for increased security and convenience.
The (simpler and even more secure) way is you have a port outside any bridge to which - when you need it - you connect a laptop, of course only if physical access to the router/switch is easy.
I am afraid that you will have to go through the (long but very well written/exhaustive) posts by pcunite:
http://forum.mikrotik.com/t/using-routeros-to-vlan-your-network/126489/1
to get more insight in possible setups.
Whoosh! (that is the sound advanced VLAN setups make when going well over my head)