Mich. Comp. Laws § 780.821

Sec. 71. The victim has the right to be present throughout the entire trial of the defendant, unless the victim is going to be called as a witness. If the victim is going to be called as a witness, the court may, for good cause shown, order the victim to be sequestered until the victim first testifies. The victim shall not be sequestered after he or she first testifies.