AusAid and Volunteers

AusAid and Volunteer Service providers are convening a Volunteers workshop in Port Moresby at the end of July. Some of the things to be considered are how is it known whether volunteer assignments are having an impact and what development outcomes can be attributed to a program?
AusAid is involved in many projects in our region to our north as well as the Pacific, some of then direct such as this one in which my boss is participating, - "the Australian and NZ government sponsored leadership programme called “Emerging Pacific Leaders Dialogue” (EPLD). This is a 3 week programme where leaders (thank God not political leaders!) from all Pacific countries (incl. Aust & NZ) meet and visit various projects, establishments in different countries around the Pacific. Here we network, share and learn from each other. I have personally been polled in a team that will visit Fiji. We meet in Brisbane, then to various countries and the sum up in Auckland, NZ."
Others are indirect from AusAid's involvement and responsibility is devolved to organisations such as AVI for which I am one of the volunteers.