At the beginning of act iv of the tragedy of julius caesar, what are antony, octavius, and lepidus discussing?

a. how to honor caesar's will by dividing his wealth fairly

Antony, Octavius, and Lepidus are discussing who they will assassinate. Octavius says to Lepidus that his brother must die, and Lepidus agrees, but on the condition that Antony's sister's son, Publius, also must die. Lepidus exits, and Antony and Octavius start discussing whether Lepidus is useful or not. Antony thinks that Lepidus is just an empty errand man, and Octavius thinks, on the contrary, that he is an experienced and honorable soldier.