(a) Subject to subsection (b) of this section, nothing in this chapter shall affect the authority of any management official of any agency—
(2) in accordance with applicable laws—
(B)
to assign work, to make determinations with respect to contracting out, and to determine the personnel by which agency operations shall be conducted;
(b) Nothing in this section shall preclude any agency and any labor organization from negotiating—
(2)
procedures which management officials of the agency will observe in exercising any authority under this section; or
(3)
appropriate arrangements for employees adversely affected by the exercise of any authority under this section by such management officials.