Yeah im sure if there's an option in your bios that says fast boot, it has to be checked to enable the program to be able to use the fast boot option. With ASRock program there wasn't an option in the bios for it just in the program.
But Yes enable it in the bios then turn it on in the program. Once enabled(if anything like the asrock program) all that should be required is to normally "shut down" the PC. But im not 100% sure because i have not used that program before.