KC add a second image to “single image”

Hello there,

I need some help. One of my clients wants a hover effect on a linked image. He wants to switch the image source on hover. I need a possibility to add a second upload term in “single image” (so that i can upload the static image and another image which should be shown on hover)

Is there a way to add another upload term to “single image”? Or is it possible to duplicate “single image” and edit it with another image upload?

Thanks,
Astrid