The Secretary is responsible for the budget of the Office of the Secretary and for the budget of each unit in the Department. The Secretary shall have a seal. The Secretary is responsible for the planning of activities, programs, and services of the Department. The Secretary may review and approve, disapprove, or modify the plans and proposals of the units in the Department. The Secretary may investigate or hold a hearing on any complaint about the operation of a unit in the Department and may report the findings of the Secretary to the Governor. At any time, the Secretary may call a meeting of a board or commission in the Department to consider any subject. The Secretary may not exercise or perform any power, duty, responsibility, or function granted to the Board of Appeals in §§ 8–5A–05, 8–5A–07, 8–5A–10, 8–5A–11, 8–5A–12, 8–611(j), 8–629(f), 8–638, 8–639, and 8–808(a) of the Labor and Employment Article.