We have NOD32 installed on 3 machines and will be adding an additional system. All of the current NOD32 installations were purchased and installed on different dates. If we purchase a 4 user Family pack, can those 4 new licenses be installed on different dates with a full one or two years on each or will all four installs be active/valid from the date of the first install or purchase? Two of the current installations are less than halfway through their life. Thanks for any guidance!