Spiritually, to be trying to establish order suggests that we are attempting to make sense of something. We are trying to establish a logical progression when apparently there is no such thing.
To be in holy orders suggests that we are imposing a degree of discipline on ourselves.
Psychological / emotional perspective: Ordering others around in dreams suggests that we recognize the need for leadership. Emotions that are under pressure or difficulty can cause havoc in our lives. Dreams will often help us to establish a natural order by reflecting the order and method we need to deal with such chaos.
Material aspects: Lists and such techniques help us to maintain order in our everyday lives, dreaming of such things often allows us to prioritize basic tasks. In dreams, finding that we are being ordered to do something suggests that we have instinctively recognized a greater authority.