Officials from the Papua New Guinea and Bougainville governments have been nutting out the meaning of independence and greater autonomy.
In October Bougainvilleans will vote on whether to become fully independent from Port Moresby.
Bougainville President John Momis said the joint task force on referendum matters has been holding productive meetings in the past week.
He says a critical role for this group is to define just what the two options for the vote - greater autonomy or independence - mean.
"We have these two options given to the people of Bougainville, so that they have an idea of precisely what kinds of powers and functions the people of Bougainville would get under greater autonomy and under independence, so that they would make a democratic choice."
John Momis has also confirmed that the first tranche of promised funding from the PNG government for the referendum process has been paid.