It would make more sense if you attached your capx to your post. We could look at it and see what exactly you mean by "copied sprite index".
I guess you're actually talking about several instances of several object types, but hard to be sure without that support.
If you have a look at the "How do I FAQ" there are several examples of "instances overlapping" as well as "Picking / selecting instances".
I hope this can help you, otherwise as mentioned, provide your current capx with as precise description to what you want to achieve as possible.