Never change the order when the Spirit is trying to move. Be secure in your spiritual authority, unafraid that you might lose control of the service. Do not give in to the conceit that the move of the Spirit always comes through the leader. Avoid trying to manipulate the people, dictating their actions, or trying to stir up the Spirit by human means. Do not limit the opportunity to speak to a few chosen leaders.
Moves are more likely genuine when they are spontaneous.
Often, the Spirit settles on the congregation with a warm, sweet heaviness. I have often felt moved by the Spirit to speak, but had no opportunity that would not interrupt the order of service. Since I do not seem to receive an entire message until I have begun to speak, the moment was quickly past. Again, do not let yourself be preoccupied with advancing the order of service. Do not treat the Spirit as such.