§ 54. Modification of alternative form after adoption. A county which
shall have adopted an alternative form of county government may, in like
manner and with like approval of the electors of the county, as provided
by this chapter for submission and adoption of an alternative form of
county government, supplement the form of government theretofore
approved by adding thereto any provisions which might have been adopted
originally or delete or change any provisions of the form so as to leave
it in a modified form which could have been adopted originally, and the
form of government as thus modified shall, from and after the time it
becomes effective, have the force and effect of, and be deemed to be, an
alternative form of county government.