All matters for consideration at any regular meeting or study session of the city council shall be submitted in writing and filed in the office of the city clerk pursuant to the timetable established by resolution. All matters for consideration at any special meeting of the city council shall be submitted in writing and filed in the office of the city clerk at least twenty-four hours prior to the time set for such special meeting. The city clerk shall place upon the agenda of any regular, special, or study session meeting only those matters which have been directed by one council member, or authorized by the mayor or the city administrator.