ok. so u mean every time in create a vm irrespective of clone or template i need to assign it a license manually by going into the vm..
Yes, each instance of Windows has to be licensed. Whether you can use the same key and whether you need to activate the Windows license, depends on the license type you get (Retail, Open, Volume, Enterprise, ...).
Sorry, but I don't understand the second question. Can you please clarify this?
André