Drag and drop options for multiple drag objects and multiple target areas

Hi everyone,

I created a drag and drop with multiple drop zone for each object. To do it I used variables as explained here .

But now I've a new issue : i would have no alignment of the objects in my drop zone. I would like that people choose the exact place where they want to drop the object. In that way, they can see all the objects they have droped (without superposition). But when i try to configure it in the drag and drop options, it doesn't work as usually... may be because it is not a classic drag and drop. Does somebody know how to do to have no alignment of the objects when the are dropped ? Thanks a lot for your help. 

I attached the .strory file of my drag and drop if you want to have a look.

Thanks !