Georgia Code Title 9. Civil Practice § 9-9-48

(a) Unless otherwise agreed by the parties, the arbitration tribunal:

(b) Unless otherwise agreed by the parties, if a party requests or if the arbitration tribunal considers it necessary, the expert shall, after delivery of the expert's written or oral report, participate in a hearing where the parties have the opportunity to put questions to the expert and to present expert witnesses in order to testify on the points at issue.