Bougainville President, Ishmael Toroama, is aiming to push Papua New Guinea to make more definite commitments on how both governments will negotiate over the results of the independence referendum.
This is a key agenda item for the Joint Supervisory Body meeting on Friday in Port Moresby.
In November Bougainvilleans voted resoundingly for independence from PNG but Toroama took issue with Port Moresby wanting a very general proposal on the matter.
"It's an overview agenda. We have passed that, and I would like to see if we could sort that out. It will take a while but we must sort it out. At the same time going into the consultation process."
Toroama said he was also wanting progress on those powers that were still to be devolved to Bougainville, including finance, taxation, policing, fishing and forestry.