You should attend court at the scheduled date and time arranged (or if you were served with a summons, on the date and time specified in the summons).
When you arrive at court, check the case list to find out which courtroom the case is in. When you have located the nominated courtroom, tell the Sheriff’s Officer in that courtroom who you are and why you are there. Then take a seat and wait until you are called to give your evidence. Note that the process for a victim or vulnerable witness to give their evidence may be different, as the aim is to protect them from the defendant.
When it is time for you to give your evidence, you will be asked to stand in the witness box. First, you will be sworn in. This means you must take an oath, or make an affirmation, to tell the truth. The most common form of oath will require you to hold the Bible, Koran or appropriate item while a court officer asks you,
“Do you swear that you will tell the truth, the whole truth and nothing but the truth, so help you (God/Allah etc)?”
to which you reply,
Or you can choose instead to make an affirmation, in which case you will be asked to say;
“I [your name] do truly and solemnly declare and affirm that my evidence will be completely truthful.”
Perjury (giving evidence you know to be false) is a serious criminal offence.
After you have been sworn in, you will be asked questions by the party who requested your attendance (i.e. if you are a witness for the prosecution, the prosecutor will ask you questions, or if you are a witness for the defence, the defence lawyer will ask you questions). The Judicial Officer may also ask you questions while you are in the witness box. You should try to answer all questions as clearly and simply as possible.
When you have finished giving your evidence, the other side may cross-examine you, i.e. they may ask further questions about the evidence you have just given.
The amount of time you will have to spend in court depends on the nature of the trial and where you fit in as a witness. Some trials can be over in an hour or two; others can take days, weeks or months. You may be required to attend court again on subsequent dates to give more evidence.