O.C.G.A. § 15-12-62.1: Choosing of grand jurors.

The clerk shall choose a sufficient number of persons to serve as grand jurors from the county master jury list in the same manner as trial jurors are chosen. The clerk, not less than 20 days before the commencement of each term of court at which a regular grand jury is impaneled, shall issue summonses by mail to the persons chosen for grand jury service.