In addition to any other duties set forth elsewhere, the Office shall: provide professional staffing services, as required by the Executive Director, to any standing committee, statutory committee, or special joint or unicameral committee or subcommittee of the General Assembly; with the consent of the President and the Speaker, provide professional staffing services, as required by the Executive Director, to any joint legislative and executive body; and carry out any other function related to committee staffing services required by the Executive Director.