These presets are created to specifically emulate Kodak Portra film, when pushed in development, and scanned on the Fuji Frontier scanner. It allows hybrid photographers the ability to easily match their digital files to their film scans, or for digital shooters to get the film look they want.
These presets offer a simple process: decide on film stock, with either 1 or 2 stop push. You then adjust WB/Tint and exposure and pick a tone profile (see video). You can finally add grain that resembles 35mm or medium format film.