1. If you need to add a new layer, you can add a new data source (image) in the app settings.
2. Then copy the loop body, and customize the class name of the image in the newly copied loop body.
3. In the image display area, the code mode has also added a DIV element and assigned it a custom name.
4. At the very bottom of the outermost loop, copy the already written JavaScript and insert the corresponding class names.