Okla. Stat. tit. 56, § 228

A. In addition to any other form of assistance provided for under subsection E of Section 1415 of Title 10 of the Oklahoma Statutes, the Department of Human Services is authorized to pay a voucher to a relative or certified volunteer for the sole purpose of acquiring legal representation to initiate guardianship proceedings on behalf of any person who receives Title XIX Home and Community- Based Waiver-funded services from the Developmental Disabilities Services Division, or who is a resident of an institution specified in Section 1406 of Title 10 of the Oklahoma Statutes. B. Administration of the guardianship voucher program, including, but not limited to, establishing financial eligibility criteria and volunteer training and certification requirements, shall be established by rules promulgated by the Commission for Human Services.