I excuse me, In some of the courses, it was mentioned about “Instances” , instances are references of the original object.
So there is the copy to create 2, 3 or more physical copies: SHIFT+D
Or use ALT+D to create an instance, it is just a reference. but is also shows as a rendering object.
Difference between both is one is linked, other is really a separate item.
So the answer to my question is: Create an UV container and use ALT+D, and place all those instanced objects into the UV folder.
