To manually augment, there are different methods for different keys, 9th, 6th, etc., but on a keyboard it is manual is that how it works?
It says to raise each key up one key, all three keys at the same time. Repeat this three times. You know to simply raise each key up one key. Augmented chords are played like this: If a G aug. is called for, play the chord that has the G note in it! And this works for all of them. Remember that the black keys serve as two notes. All 4 chords are played in range! The note that is used in the pedal is teh same as the chord... for instance, the G aug. chrd... play the G pedal and the 3rd chord, etc.
For Fun... you can put this method on a piano too! Simply follow the rules But place the root of the chord on the bottom on the left hand, or invert chords to bring left hand closer to center of keyboard.
It says to raise each key up one key, all three keys at the same time. Repeat this three times. You know to simply raise each key up one key.