If your name is called as being a member of a trial panel, you and other members of the panel will be assigned to a courtroom. You will be instructed where to report and asked to wait in the lobby for instructions from the bailiff. Generally, you will be permitted to return home at the close of the day's session in court.
If an emergency arises while you are sitting as a juror, consult the bailiff or judge about your problem. Should you need to get in touch with your family or employer, the bailiff will be happy to assist you.