Selecting first view that shows up / Starting point of virtual tour
In the Publish > PlayList you can change the order of the panoramas. In this case Panorama 1 is the first view. Dragging Panorama 3 to the front will make that the first view.
For more information on setting your first view when entering the panorama see: https://3dvistanews.wordpress.com/2019/10/10/start-point-options