When you purchase a retail license of Sequence Generator Pro you reserve the right to install it on up three personally owned machines.  These licenses are self managed through a combination of the website (http://www.mainsequencesoftware.com/AccountManagement) and the actual SGPro application.

When you purchase SGPro, an account will be created automatically and sent to your email address.  This is the account you will use to log in to the Main Sequence Software site and also to register machines for use of Sequence Generator Pro.