The department of health and human services shall establish, by means of a memorandum of agreement with the New Hampshire Association of Counties, a mechanism for the receipt of input from the Association of Counties regarding the type, cost, utilization, and procedures relative to payments which the counties are obligated to make pursuant to N.H. Rev. Stat. § 167:18-a. The memorandum of agreement shall be reviewed annually and amended as may be determined to be necessary by the parties.