If you are charged with a misdemeanor traffic offense, you must appear in court. Seat belt violations do not require a court appearance, even though they are often marked as misdemeanors on the tickets. If you were charged with no proof of insurance, but you had insurance at the time of the stop, you should contact the DA's office at 785-832-5321 in advance of your court date to provide them with your insurance information. They will then let you know if you need to appear in court or not.
If all charges on your ticket are infractions, you are not required to appear in court provided you plead guilty or no contest and pay the fine and costs by the date indicated on your ticket. If you wish to contest the charge, you must appear and plead not guilty. A trial date will then be set.