The act of issuance authorizing the issuance of any securities or any trust indenture or other instrument created by such act of issuance may fix a rate or rates of interest, or provide for the determination of the rate or rates from time to time, by a designated agent according to the procedure specified in that act of issuance or other instrument. An issuing authority of a public entity may contract with or select any person to make such determinations.
C.R.S. § 11-57-206