If an individual meets the requirements laid out in the act...and the Parole Board, as I understand it, is going to be publishing a how-to guide that will be available on the Internet to explain it to people. As there is now for applying for a pardon in the normal way, there will be detailed explanations and the application form.
Presuming that the applicant has submitted a complete application with all the relevant information, then it is simply an administrative decision of whether it has accomplished all the objectives of the act and there's no subjective judgment call to be made in those circumstances. That's why it's faster.