Scattering power cells
Now that we have our power cell object stored as a prefab, when we duplicate the object in the scene, we are creating further instances of the prefab. Ensure that you still have the powerCell selected in the Hierarchy and then duplicate the object three times so that you have four in total; this can be done either by going to Edit | Duplicate, by using the keyboard shortcut Command + D (on Mac) or Ctrl + D (on PC), or by right-clicking the object in the Hierarchy and choosing Duplicate from the drop-down list.
Note
When objects in the scene are duplicated, the duplicates are created at the same position—don't let this confuse you. Unity simply does this to standardize where new objects in the scene end up, and this is because when an object is duplicated, every setting is identical—including the position. Moreover, it is easier to remember that they are in the same position as the original and simply need moving from that position.
Now, select each of the four powerCell...