Assistance to boards. The Planning Board and ZBA, as authorized by the Town Board, shall have the authority to call upon any Town department, agency or employee for such assistance as may be deemed necessary and appropriate under the circumstances. Such department, agency or employee may be reimbursed for any expenses incurred as a result of rendering such assistance. The Planning Department, within the limits of budget appropriations, shall provide the Planning Board and ZBA with any necessary experts, clerks and a secretary.