The National House of Chiefs shall -
(a) advise any person or authority charged with any responsibility under this Constitution or any other law for any matter relating to or affecting chieftaincy;
(b) undertake the progressive study, interpretation and codification of customary law with a view to evolving, in appropriate cases, a unified system of rules of customary law, and compiling the customary laws and lines of succession applicable to each stool or skin;
(c) undertake an evaluation of traditional customs and usages with a view to eliminating those customs and usages that are outmoded and socially harmful;
(d) perform such other functions, not being inconsistent with any function assigned to the House of Chiefs of a region, as Parliament may refer to it.