The Village Administrator shall have those powers, duties and functions as provided by the general laws of the State of Ohio, and in addition, he shall have the following powers, duties and functions:
(a) The Village Administrator is hereby designated as the purchasing agent for all Village offices, departments, divisions, boards and commissions and he shall make all contracts, purchase supplies or materials, provide for any work of the Village.
(b) The Village Administrator is hereby authorized to promulgate written rules and procedures to be followed by all Village officers and employees relative to the requisitioning of supplies, materials and work for their respective offices, departments, divisions, boards or commissions. Such rules and procedures shall not conflict with any of the provisions of the ordinances of the Village.