The two virtual channels that comes with the driver installed are connected, working as for example two Leafs connected by a loopback cable.
If you want more virtual channels, or channels not connected, you can use the Add Hardware Wizard to add a second pair. These will be connected to each other, but not to the first pair.
- Press Windows + R, and type hdwwiz and click OK
- Click Next, and manual install. Select CAN Hardware (Kvaser) and Next
- Scroll down to Kvaser Virtual CAN driver, and then Next until it finishes.
You should now have an additional pair of virtual channels ready to use.
UPDATE: As of Feb, 2018, virtual drivers now allows customers to use up to 16 virtual buses.