The Marquette City Charter, which took effect on January 1, 2013, requires the City Commission to appoint a charter study group every 10 years. The charter study group will have one year to review the charter and make recommendations for amendments. Any amendments would ultimately need to be supported by the City Commission and adopted via a citywide ballot item.
While the Charter doesn't explicitly state what the makeup of this board should be, minutes from the 2012 Charter Commission provide some insight on the original intentions.
The original idea, as expressed in meeting minutes and in motions, was to require the City Commission to request an internal administrative review of the Charter every 10 years and to pair it with a City Commission public hearing seeking citizen input.