Hello Trace

Thank you for your purchase.

Unfortunately, if you're using Image and Attachment columns, you can't add more than one file in there.

To add multiple images, you can use multi-line string-type columns, and add images with HTML's IMG tag, like:

<img src="url-to-image-1"><img src="url-to-image-2"><img src="url-to-image-3">

And so on.