VLANs to a VSWITCH

Hi

the link here Hyper-v Config seems to indicate the creation of 1 virtual switch but has multiple virtual LANs attached to it. 

firstly, is this correct how I am understanding it?

secondly, I take it there is no way to do this in the GUI since I can't find it, is command line the only way to do this (not that I mind that at all)?

thanks

Steve