The Walsh County Tax Director has the power, duty, and responsibility to call upon and confer with assessors in the county and to assist them in the preparation and proper use of land maps and property record cards, preparation of assessment books, changes in assessment laws and rules, determination of proper standards of value, use of proper classifications of property, determination of what property qualifies as exempt from property taxes, and authority to require attendance at meetings, to promote uniform assessment of all real property in the county.