Show all images by default

Hi there
I’m trying to show all the gallery images in the first page load (meaning: no need to select a particular variation to see all the product images)

Then, as soon as the user selects some particular variation we would show that particular gallery

Is that possible?

Or admin need to create a general product gallery to do that? (so he would need to create not only one gallery for every variation but also a “general” gallery for “not selected variation” use case)

I′m checking in settings/documentation and cannot find nothing related to this

thanks