25 C.F.R. § 20.206
Must a tribe get approval for a tribal redesign plan?
If you have a Public Law 93-638 contract or receive direct services from us, you must obtain our approval before implementing a redesign plan. You can apply for approval to the Regional Director through the Bureau servicing office.
(a) You must submit your redesign plan for approval at least 3 months before the effective date.
(b) If you operate with a self-governance annual funding agreement, you must obtain the approval of the redesign from the Office of Self-Governance.
(c) If you operate with a Public Law 102-477 grant, you must obtain approval from the Bureau Central Office.