Intonation can be adjusted using the two allen set screws facing the tail end of the guitar. A strobe tuner or other electronic tuning device should be used. Match the octave (fretted) note of the first and sixth strings with their corresponding 12th fret open harmonics by shortening or lengthening the strings with the adjusting screws using the allen wrench provided. Start with the treble side and then go to the bass side, return to the treble side for one last check. The other four strings are present and will intonate correctly provided a conventionally gauged string set with a plain third (G) string is used. Use of a wound third string is not recommended with this bridge.
Good luck! daveo