This option is meant primarily for students, unemployed people, people from countries with a lower general income and generally others who couldn't afford the game otherwise. We trust you that you will only apply if you really need it.
The application process will run from the 16th of June until the 23rd. On the 23rd, we will let you know whether you were awarded a discounted ticket. Please, only register for the game AFTER that - the first interval of the signup will run from the 16th of July to the 30th, so you will still have plenty of time to register after you know whether you have been awarded a discount ticket.