It seems Notion requires all notes struck at the same time to have the same value. Yet, when tabbing a finger style song it is common for the notes played with the thumb to be a different value than the those played with the fingers, even when struck at the same time. For example, the thumb might be playing quarter bass notes while the melody has a more complicated rhythm that is sometimes on the beat and sometimes syncopated. Is there a way to notate or tab that?