The people of the Town of Granite, Oklahoma, by their approval of this chapter at the election hereinbefore provided, have authorized the Town Board of Trustees, by ordinances duly enacted, to make such administrative and technical changes or additions in the method and manner of administration and enforcing this subchapter as may be necessary or proper for efficiency and fairness, provided that the rate of the tax herein provided shall not be changed without approval of the qualified electors of the municipality, as provided by law.
(`85 Code, § 1-80)