You can move, reorder, and copy plug-ins in a channel strip.
Hold down the Command key while dragging the plug-in to an empty slot, either on the same channel strip or on another channel strip.
Hold down the Command key while dragging the plug-in to an occupied slot, either on the same channel strip or on another channel strip.
Hold down Option-Command while dragging the plug-in to another slot, either on the same channel strip or on another channel strip.