WIndows Server with Multiple IP addresses in different VLANS

What I'm trying to achieve:-

One Windows 2008 R2 server Virtual machine with 6 vNIC's each with different IP address from different VLAN & connected to port group of corresponding VLAN.

Now how do I make sure the traffic is flowing correctly as in traffic for specific VLAN is coming & going out of that vnic so that it can flow through designated port group

Since only one gateway can be mentioned I guess we need to add static routes to make this work but if it's the static routes then please explain me how those routes needs to be added for each IP address.

Or if there's any other way to do the same please let me know.

Thanks in advance. .