It shall be within the discretion of the presiding officer to extend, for good cause shown, any time limit prescribed or allowed by these rules. All requests for an extension should be made by a motion in accordance with Rule 20-14-.15 and shall indicate therein whether all parties concur. The presiding officer shall notify all parties of its action upon the motion. Extension shall be granted only when the presiding officer is satisfied that good cause has been shown and not otherwise.
Ga. Comp. R. & Regs. R. 20-14-.07
O.C.G.A. Secs. 43-3-8, 43-3-20, 43-3-21, 43-3-22, 43-3-23, 43-3-24, 43-3-28.