For the purpose of this chapter: “Agency” means an administrative unit of state government, including any department, institution, commission, board, council, authority, or other body, however designated. “Board” means any collegial body in the executive branch of state government created by the General Assembly. “Function” means an activity, assignment or set of operations. “Reorganization” means a transfer, consolidation, coordination, or abolition of a function, or the assignment or reassignment of responsibility and authority for the execution of a function.