Ga. Code § 22-2-108
The special master appointed pursuant to Code Section 22-2-103 shall serve in lieu of a board of assessors; provided, however, that if two assessors are selected pursuant to Code Section 22-2-108.1, the special master shall serve as the chairperson of the special master panel and shall decide all issues other than value issues which arise at the hearing provided for in Code Section 22-2-102. The special master's duties and authority, except as otherwise provided for in this article, shall be the same as provided by Code Sections 22-2-61 through 22-2-63. The special master shall hold the hearing provided for in Code Section 22-2-102 at the time and place provided by the order of the judge of the superior court and in compliance with the duties and authority conferred by this article. The special master shall not be authorized to continue or delay the hearing, except as otherwise provided by Code Section 22-2-108.1, relating to granting of a recess for selection of assessors, or by Code Section 9-10-150, relating to granting continuances by reason of membership in the General Assembly during sessions thereof, or except upon the written order of the judge of the superior court; and such a continuance shall be granted only for good cause shown to that judge. When it shall be necessary for the judge to grant a continuance, the continuance shall be for not more than five days from the date of the order granting the continuance.
OCGA § 22-2-108