Wis. Stat. § 788.03

The party aggrieved by the alleged failure, neglect or refusal of another to perform under a written agreement for arbitration may petition any court of record having jurisdiction of the parties or of the property for an order directing that such arbitration proceed as provided for in such agreement. Five days’ notice in writing of such application shall be served upon the party in default. Service thereof shall be made as provided by law for the service of a summons. The court shall hear the parties, and upon being satisfied that the making of the agreement for arbitration or the failure to comply therewith is not in issue, the court shall make an order directing the parties to proceed to arbitration in accordance with the terms of the agreement. If the making of the arbitration agreement or the failure, neglect or refusal to perform the same is in issue, the court shall proceed summarily to the trial thereof. If no jury trial is demanded, the court shall hear and determine such issue. Where such an issue is raised, either party may, on or before the return day of the notice of application, demand a jury trial of such issue, and upon such demand the court shall make an order referring the issue to a jury summoned and selected under s. 756.06. If the jury finds that no agreement in writing for arbitration was made or that there is no default in proceeding thereunder, the proceeding shall be dismissed. If the jury finds that an agreement for arbitration was made in writing and that there is a default in proceeding thereunder, the court shall make an order summarily directing the parties to proceed with the arbitration in accordance with the terms thereof.