If you are subobject selecting surfaces or edges within polysurfaces, and copying them ELSEWHERE, tapping ALT (look for the + sign to show up) and dragging them where you want will copy the subobject.
If you want to copy them a specific distance, start dragging, tap Alt, enter the distance, and place. In this case, I prefer to use the Gumball: subobject select, Alt+Click on the Gumball arrow and enter a value.
sorry, completely out of context, I joke around with my designers that spread out their models in rhino all over the viewport, because of course then always end up with some kind of errors of things not matching up, because they accidentally snapped to the wrong thing. …same reason why I model at zero and I mirror only using macros that mirror x/y/z zero.