Suppose you want to move 2 Image Blocks over 2 Slideshows, you can follow these.
#1. Add a Section with 2 Image Blocks

#2. Use Squarespace ID Finder to find the ID of 2 Image Blocks and 2 Slideshows. In my example, we will have:
- Image Block 1 (Left image): #block-yui_3_17_2_1_1716948754371_2168

- Image Block 2 (Right image): #block-yui_3_17_2_1_1716948754371_3229

- Left Slideshow: section[data-section-id=”6655814af27321176a65fb4e”]

- Right Slideshow: section[data-section-id=”6655814af27321176a65fb50″]

#3. Use this code to Code Injection – Footer
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.0/jquery.min.js"></script>
<script>
$(document).ready(function() {
// VFX
$('div#block-yui_3_17_2_1_1716948754371_2168').appendTo('section[data-section-id="6655814af27321176a65fb4e"] .gallery-fullscreen-slideshow-list');
// Postproduction
$('div#block-yui_3_17_2_1_1716948754371_3229').appendTo('section[data-section-id="6655814af27321176a65fb50"] .gallery-fullscreen-slideshow-list');
});
</script>

#4. Use this code to Custom CSS box to align the image center + adjust the image block size.
div.gallery-fullscreen-slideshow-list .image-block {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%,-50%);
width: 100%;
max-width: 350px;
z-index: 999999
}

#5. Result
