To request a postponement, follow the instructions in the Juror Affidavit Questionnaire or Summons or contact the court in which you are scheduled to appear. In its demand, a party must specify the issues for which it requests a jury.At its core, the right to a jury trial grants citizens the right to have their case heard before a jury of their peers. If you want a Jury Trial, write in your name, address and other information at the top of the page. Demand for jury; trial procedure. After a trial is over, am I finished or am I still on call? Once you have served as a juror for a trial your jury service is finished for the reporting period. If you ARE selected to serve on a jury for a trial, your service is complete at the conclusion of the trial. The average trial lasts for three to five days. Your role as a juror is to get a full understanding of the facts of a criminal case, to evaluate the evidence, and to make an impartial and fair decision.