This article explains how to build a Kintone App with a random record selector button using the Underscore.js JavaScript library. The example customization will illustrate how the Underscore.js library's sample function can be used to make a Random Employee Selector App. Each record contains information on each personnel. A button on the header of the Record List page is created. When the button is clicked, a confirmation window will popup with the name of the chosen employee. If the user clicks OK, they are redirected to the Record Details page.