Ow does Augustus use family, and traditional rebulican institutions and activities to secure succession? Implications of this?

Why did Romans fear rule by Monarchy?
How did Augustus use family to secure succession?
How did Augustus use traditional rebulican institutions and activities to secure succession?

Must quote, paraphrase, and site ancient text using footnotes.

Sources must include:
Cassius Dio, The Roman History: The Reign of Augustus, Penguin, 1987.

Tacitus, Complete Works of Tacitus, Moses Hadas (ed.), The Modern Library, 1942
Res Gastae, %7Ehcfll004/nicolaus.html

Suetonius, Life of Augustus, html

Velleius Paterculus (Please note, Velleius oten refers to Tiberius by the name Nero.), Velleius_Paterculus/2D*.html