S.C. Code § 14-9-190
The board of jury commissioners as constituted by law in each of the counties of the State for the drawing of jurors for the circuit courts shall constitute the board of jury commissioners for the drawing of jurors to attend upon the sessions of the county court and the law relating to the qualifications, drawing and summoning of jurors for attendance upon the circuit courts shall apply to the qualifications, drawing and summoning of jurors for the county court, except that not more than eighteen person shall be drawn and summoned to attend at the same time at any session of the county court, unless the court shall otherwise order. Jurors drawn and summoned shall appear and attend upon the sessions of the county court for which summoned until excused or discharged by the judge presiding.
S.C. Code § 14-9-190