Ms Tuwhare said she had already received the thumbs up from groups willing to participate, while others were still discussing whether to engage.
She said the process, likely to begin in December, will involve an intense programme with the aim of resolving issues by early next year. The outcome will be non-binding options and recommendations to the relevant parties on the way forward for resolution.
"The advancement of our people is a priority, and we are confident that, with goodwill on all sides, agreement can be reached on a way forward," said Tuhoronuku chairman Hone Sadler.
The engagement process follows the Waitangi Tribunal report on the Ngapuhi mandate, which found, while the Crown was right in recognising Tuhoronuku's mandate, the structures of the group undermined the rangatiratanga of hapu. Lack of engagement with groups in opposition was also listed as a major concern in Minister of Treaty Negotiations Chris Finlayson's September letter to Tuhoronuku.