Elizabeth Nosworthy, chairman of the Queensland Water Commission and Commander Communications Ltd and deputy chairman of Babcock & Brown Ltd, to speak at an Australian Institute of Company Directors breakfast to be held on August 28 at the Hyatt Regency. Indonesian Banking Development Institute director Dr Subarjo Joyosumarto, to speak at an Australian Indonesia Business Council seminar on the Indonesian financial sector, August 29 at the Australian Institute of Management offices. Dr Ken Henry, secretary to the Commonwealth Treasury, to speak at a John Curtin Institute public policy forum on September 4 at the Hyatt Regency. Dexter Dunphy, professor at the University of Technology Sydney’s School of Management, to speak at an AIM breakfast on sustainability on September 5 at the Hyatt Regency.