Short answers, pulled from the story.
The Roman Senate granted Octavian the honorific name Augustus in 27 BC. This event marked a turning point when he returned all powers to the Senate and people before accepting a ten-year command over disordered provinces.
Augustus gave up the consulship completely after holding it for ten years during the major restructuring of 23 BC. He received tribunician power in exchange which allowed him to propose laws, veto legislation, and grant amnesty without offending the aristocracy.
Lucius Cornelius Balbus became the last man outside Augustus's family to win this award in 19 BC. Tiberius later won a triumph for victories in Germania in 7 BC while Augustus held proconsular imperium maius to override other governors.
Augustus took up the position of pontifex maximus on the 6th of March 12 BC. This role made him high priest of the College of Pontiffs and connected him directly to religious traditions following the death of Lepidus.
The Senate granted Augustus the title pater patriae on the 5th of February 2 BC. This honorific marked the end of his constitutional reforms era and solidified his status as the supreme leader of Rome.