The wizard will automatically select your default PokerTracker 4 database but all PokerTracker 4 databases will be listed so you can select a different one for NoteCaddy to use if you prefer.
The wizard should automatically detect the PostgreSQL version being used by PokerTracker 4, and should only need to be changed if you have multiple PostgreSQL versions installed and the wrong one was pre-selected. On the first run, the NoteCaddy Setup Wizard will be displayed to walk you through setup. When you are registered for NoteCaddy it will be downloaded and installed automatically the next time that you run PokerTracker 4.
