How did Sai Baba extend his grace and get work done for devotees who were not physically near him?

Chapter 18 explains that Baba's ability to bestow grace was not limited by physical distance. The text states that whether a devotee was near or in a distant land, Baba was 'close within' them. This illustrates his omnipresence. Furthermore, even while sitting in the Masjid, he could get his work done elsewhere by assigning tasks to specific individuals. He accomplished this by giving them 'His own power' to complete the work successfully. A prime example is when he told Bapusaheb Jog to read the sacred books in the Wada, thereby creating an opportunity for spiritual growth for many devotees through an empowered intermediary.