Fla. Stat. § 125.63
The charter commission shall conduct a comprehensive study of the operation of county government and of the ways in which the conduct of county government might be improved or reorganized. Within 18 months of its initial meeting, unless such time is extended by appropriate resolution of the board of county commissioners, the charter commission shall present to the board of county commissioners a proposed charter, upon which it shall have held three public hearings at intervals of not less than 10 nor more than 20 days. At the final hearing the charter commission shall incorporate any amendments it deems desirable, vote upon a proposed charter, and forward said charter to the board of county commissioners for the holding of a referendum election as provided in s. 125.64.
Fla. Stat. § 125.63