S.C. Code Ann. § 14-7-190
Not less than fifteen days nor more than thirty-five days before the first day of any week in which more than one term of court requiring juries is scheduled in a county, the jury commissioners shall draw a number of petit jurors to serve as a jury pool, from which the courts shall draw panels of jurors as needed according to the following schedule:
(4) When five or more concurrent terms of court are scheduled, the commissioners shall draw fifty percent of the number of jurors which they would otherwise draw.
The jury commissioners shall not exclude or disqualify any juror drawn.