|Wanderer was correct, you are confusing VPN with VLAN. At least, according to the following you sure are:|
actually there are two vpn in our company and one is for production and one for marketing.
our GM laptop is a part of production network but he also want to access the marketing vlan........
Perhaps that's just a typo on your part, but there is a world of difference between VPN and VLAN.
To answer this question: "how we can put one computer in two different vlan at the same time."
I would say, two NIC's. One per VLAN (subnet) with the correct settings. However, you will likely find that you only want one enabled at a time.
Alternatively, you could add a route between VLAN's (subnets) so that the GM laptop can also access the marketing VLAN.