This will be a native feature of the platform in January 2025.
Until then, you will need to add a button to your page, and use the code below.
Code goes in Page Settings > Custom Code > Head. Wrap it in <script> </script> tags.
// Replace 'x' with the desired time in milliseconds (e.g., 5000 for 5 seconds)var timeDelay = x; // Time in millisecondssetTimeout(function() { // Replace 'elementId' with the actual ID of the element you want to click var element = document.getElementById('elementId'); if (element) { element.click(); }}, timeDelay);