How to display different objects on the same reference image in AR ?

I am trying to display 4 different object in AR - the images should be displayed separately - while I only want to use 1 image. I am working with ARfoundation.

I was thinking about changing the name of the image - inside the reference library - at runtime. I don't really know how to do it if it is even possible to do. That is just an idea maybe I wouldn't work anyway.

If you have any solution or source that I could go trough please feel free to comment.