Since you only have one computer you don't need to worry. However, if you had 6 computers, you would then have to check how many licenses a particular software package includes. In your case, you just have multiple users with access to one computer and whatever software/applications you have in that one computer. Many software companies allow two computers to share a single license. I happen to be in music and have 4 Macs for which I have to ensure that all my music applications have licenses for all four computers. In my case, I always buy licenses for 5 computers to be on the safe side. Hope this helps.