Wis. Stat. § 61.261

The village treasurer, subject to approval by a majority of all the members of the village board, may in writing, filed in the office of the clerk, appoint a deputy who shall act under the treasurer’s direction and who during the temporary absence or disability of the treasurer or during a vacancy in such office shall perform the duties of treasurer. The deputy shall receive such compensation as the village board shall determine. The acts of such deputy shall be covered by official bond as the village board shall direct.