Original: He became Finance Minister in November 1999 and was named by the Pakistan Muslim League for the position of Prime Minister after the resignation of Zafarullah Khan Jamali on June 6, 2004.
Simplified: He became Finance Minister in November 1999. Aziz was chosen by President Musharraf for the position of Prime Minister after the resignation of Zafarullah Khan Jamali on June 6, 2004.