According to Chapter 52, why was the book "Sai Satcharitra" written and who was chosen to write it?

Chapter 52 explains that the book, also referred to as "Sai Leela," was written to remember and preserve the experiences Sai Baba gave to His devotees while He was in His body. The chapter describes the text as supremely holy, containing the stories of His true character. It is revealed that Sai Baba Himself inspired the book after His departure and specifically chose Hemadpant, who was described as being devoid of specialized knowledge, to author this life story. The text states that Baba held Hemadpant's hand, guiding him to cause this true life story to be written for the enlightenment of all.