It shall be the duty of the planning and zoning commission to:
A. Provide ways and means to obtain citizen participation in the administration of title 11 of this code;
B. Prepare a procedure for processing zoning permits namely: special use permits, rezone applications, planned unit development proposals and variance applications;
C. Recommend changes in the city comprehensive plan to the governing board;
D. Hear all requests for amendment to title 11 of this code, hold at least one public hearing and make its recommendation to the governing board;
E. Recommend changes to title 11 of this code, if needed, to the governing board; and
F. Make recommendations to governing board for changes to boundaries of the city and to zoning areas included therein. (1977 Code § 2.32.120)