Acts are linked by two plot details or turning factors, with the main turning issue connecting Act I to Act II, and the next connecting Act II to Act III. The conception of the a few-act structure has actually been attributed to American screenwriter Syd Discipline who explained plot composition https://www.farukhnagarplots.com/government-pushes-infrastructure-in-farukhnagar-and-pataudi-boosting-demand-for-plots-floors/