To add programs to the list of protected applications, you just need to drag and drop the icon into the program's window. You can even protect Password Protector itself, so that no one else can get into it.
From the main menu, you can also launch all of the applications that you have protected, basically using Password Protector as a program launcher.
Password Protector is very useful for users who share computers and don't want everyone to have access to certain programs.
Trial version has a time limit.