ChapterIII-XI. Intercessions, Lord's Prayer, and Concluding Prayer
The Prayers or Intercessions at Morning and Evening Prayer
179. The liturgy of the hours is a celebration in praise of God. Yet Jewish and
Christian tradition does not separate prayer of petition from praise of God; often
enough, praise turns somehow to petition. The Apostle Paul exhorts us to offer
prayers, petitions, intercessions, and thanksgiving for all: for kings and all in authority, so that we may be able to live quiet and peaceful lives in all reverence and decency, for this is good and acceptable before God our Savior, who wishes all to be saved and to come to the knowledge of the truth" (I Tm 2:1-4). The Fathers of the Church frequently explained this as an exhortation to offer prayer in the morning and in the evening. 
180. The general intercessions, restored in the Mass of the Roman Rite, have their place also at evening prayer, though in a different fashion, as will be explained later.
181. Since traditionally morning prayer puts the whole day in God's hands, there are invocations at morning prayer for the purpose of commending or consecrating the day to God.
182. The word preces covers both the intercessions at evening prayer and the invocations for dedicating the day to God at morning prayer.
183. In the interest of variety and especially of giving fuller expression to the many needs of the Church and of all people in relation to different states of life, groups, persons, circumstances, and seasons, different intercessory formularies are given for each day of the four-week psalter in Ordinary Time and for the special seasons of the liturgical year, as well as for certain feasts.
184. In addition, the conferences of bishops have the right to adapt the formularies given in the book of the liturgy of the hours and also to approve new ones,  in accordance with the norms that follow.
185. As in the Lord's Prayer, petitions should be linked with praise of God and acknowledgment of his glory or with a reference to the history of salvation.
186. In the intercessions at evening prayer the last intention is always for the dead.
187. Since the liturgy of the hours is above all the prayer of the whole Church for the whole Church, indeed for the salvation of the whole world,  universal intentions should take precedence over all others, namely, for: the Church and its ministers; secular authorities; the poor, the sick, and the sorrowful; the needs of the whole world, that is, peace and other intentions of this kind.
188. It is permissible, however, to include particular intentions at both morning prayer and evening prayer.
189. The intercessions in the office are so arranged that they can be adapted for celebration with a congregation or in a small community or for private recitation.
190. The intercessions in a celebration with a congregation or in common are thus introduced by a brief invitation, given by the priest or minister and designating the single response that the congregation is to repeat after each petition.
191. Further, the intentions are phrased as direct addresses to God and thus are suitable for both common celebration and private recitation.
192. Each intention consists of two parts; the second may be used as an alternative response.
193. Different methods can therefore be used for the intercessions. The priest or minister may say both parts of the intention and the congregation respond with a uniform response or a silent pause, or the priest or minister may say only the first part of the intention and the congregation respond with the second part.
194. In accord with ancient tradition, the Lord's Prayer has a place suited to its dignity, namely, after the intercessions at morning prayer and evening prayer, the hours most often celebrated with the people.
195. Henceforth, therefore, the Lord's Prayer will be said with solemnity on three occasions during the day: at Mass, at morning prayer, and at evening prayer.
196. The Lord's Prayer is said by all after a brief introduction, if this seems opportune.
197. The concluding prayer at the end marks the completion of an entire hour. In a celebration in public and with a congregation, it belongs by tradition to a priest or deacon to say this prayer. 
198. In the office of readings, this prayer is as a rule the prayer proper to the day. At night prayer, the prayer is always the prayer given in the psalter for that hour.
199. The concluding prayer at morning prayer and evening prayer is taken from the proper on Sundays, on the weekdays of the seasons of Advent, Christmas, Lent, and Easter, and on solemnities, feasts, and memorials. On weekdays in Ordinary Time the prayer is the one given in the four-week psalter to express the character of these two hours.
200. The concluding prayer at daytime prayer is taken from the proper on Sundays, on the weekdays of the seasons of Advent, Christmas, Lent, and Easter, and on solemnities and feasts. On other days the prayers are those that express the character of the particular hour. These are given in the four-week psalter.