I have been playing, composing, and arranging for the Native American "Style" Flute (NAF) for many years. Many players in this relatively small musical community are not formally trained musicians, and often do not read music.

Although a standardized, western-style notation system does exist for this instrument (known as Nakai Tablature, or simply "Nakai Tab"), compositions for the NAF often include finger charts beneath the written part, which at least identifies the notes to play, if not the rhythm.

Unfortunately these finger charts are not universally standardized, and are not included by default in Sibelius or any other well-known notation software.

For the NAF composer, this often requires importing these finger chart diagrams from external sources, and then positioning them using .pdf editing tools after the written score is created using Sibelius. This workflow is quite time-consuming, inefficient, and error-prone (and the process becomes even more difficult to manage when later layout changes are introduced).