(A) The legislative body may add to this code a new chapter, subchapter or section either by indicating, with reference to the arrangement of this code, the proper placement of the new chapter, subchapter or section, or by adopting a new ordinance, order, or resolution of a permanent and general nature without specific reference to this code but which by its nature would be proper for inclusion in this code.
(B) The legislative body may amend or repeal any existing chapter, subchapter or section of this code by amending or repealing such chapter, subchapter or section, or by amending or repealing the ordinance, order or resolution establishing the current text of such chapter, subchapter or section.