Chapter V-G. Lectern or Place from Which the Word of God is Proclaimed
272. The dignity of the word of God requires the church to have a place that is suitable for proclamation of the word and is a natural focal point for the people during the Liturgy of the Word. 
As a rule the lectern or ambo should be stationary, not simply a movable stand. In keeping with the structure of each church, it must be so placed that the ministers may be easily seen and heard by the faithful.
The readings, responsorial psalm, and the Easter Proclamation (Exsultet) are proclaimed from the lectern; it may be used also for the homily and general intercessions (prayer of the faithful).
It is better for the commentator, cantor, or choir director not to use the lectern.