I still have about two months remaining on my current 5 license product subscription and need to upgrade to a 10 license subscription at the end of these two months. I want to purchase the 10 license subscription now and then install in two months. However, the product description indicates "Point of Sale Activation" and I'm not sure what that means. Is that just an inventory process or does the clock start ticking on the one-year subscription at the time of sale? Does anyone know? Thanks.