Explanation: These instruments almost exclusively play the main rhythmic grooves. For special effect, a rhtyhm guitarmay occasionally play melody or counterpoint. Follow what you wrote in your roadmap, and put it in writing. If you can record it, even better.
Rhythm guitars should be working closely with the drums and bass. They are the third element in driving the song forward. Additionally, they help define the music arranging structure by fully enunciating the chords. Many songwriters compose just on guitar, because it can indeed do all things on a small scale. Use all those abilities in your arrangement.
Next: 10. your counterpoint instruments.