(a) (1) The charter commission shall submit a proposed unified charter to the legislative body of each municipality.

(2) The legislative body shall include the proposed charter in a resolution that is considered in accordance with the procedural requirements provided for charter amendments in §§ 4-303(a) and 4-304 of this title.

(3) For purposes of § 4-303(a) of this title, the resolution is considered to embrace only one subject.

(b) Each legislative body may:

(1) adopt or reject the resolution; or

(2) amend the resolution, if the legislative bodies of the other municipalities concur.