Q: For simplicity sake, say you have a good old ii-V-I in C. If the bass player is playing the roots, D to G to C, then on piano I won't want to play the chords starting on those same roots. So I'd maybe play FACE, FABE, then EABD.
A: you have to specify which octave. chords behave differently texturally depending on which octave, especially when we're talking about arranging which instruments play what