(a) The phrase “Attorney General or his designee” also includes:
(i) The Attorney General or his designees;
(ii) The Attorney General and his designee or designees.
(b) The term “impaneling judge” means any senior circuit court judge of any circuit court district who, upon petition by the Attorney General, impanels a state grand jury under the provisions of this chapter and shall also include any successor to such judge as provided by law.