Watch the Guitar Parts online guitar lesson by Jesús Hernández from Buena Vista Cuban Guitar Guidebook
When two or more guitarists play together, there is nothing wrong with everyone playing exactly the same voicings. However, it will sound more creative and nicer if each guitarist uses different voicings.
Let's say that a guitarist uses chords from the fourth to the first string. Another guitarist can play the chords from the sixth string to the fourth string, etc. In this way, we achieve different sounds and intervals in different octaves. This enriches the music.