About Spawing


Sorry for being such a noob :)

1st of all, About the spawning feature of Blizzard. Lets say a friend of mine has a WoL already installed. Can he use the spawning feature of Starcraft 2? 

2ndly, If he has already the HoTS and decides to let a friend use his WoL key, can that be still used?

So sorry for posting such a newb question.

Thanks in advance for the responses.