The county legislative body may appoint a committee consisting of some number of its members to prepare and present to the county legislative body one or more contracts with one or more insurance companies or other corporations authorized to provide any of the following types of insurance for county employees and officials: group life, hospitalization, disability and medical. The number of members is not specified by statute and is determined by county legislative body resolution. T.C.A. § 8-27-501 et seq.