The Sub-Committee on Legal and Institutional Issues was tasked by MSG leaders at their Honiara summit in July to clarify guidelines for observer, associate and full membership in the group.
This comes as the MSG's five full members - Papua New Guinea, Fiji, Solomon Islands, Vanuatu and New Caledonia's FLNKS Kanaks Movement - grapple with whether to grant full membership to West Papuans.
The United Liberation Movement for West Papua was granted observer status in the MSG last year but its bid for full membership has been deferred pending clarity on the guidelines.