Charles Malik, former Lebanese ambassador to the United Nations who served a term as president of the United Nations General Assembly, has become the first person to occupy the newly established Jacques Maritain Distinguished Professorship in Moral and Political Philosophy at Catholic University.

Msgr. Eugene G. Bilski has been named director of the National Shrine of the Immaculate Conception. Formerly assistant director and administator of the Shrine since the first of the year, Bilski is a priest of the Diocese of Scranton.

Dr. James Deotis Roberts, formerly a professor at Howard University's School of Religion and editor of that school's Journal of Religious Thought, has been installed as the fourth president of the Interdenominational Theological Center in Atlanta.

The Rev. John J. O'Callaghan has been named president of the United States Jesuit Conference, effective June 15, succeeding the Rev. James L. Connor. Since 1976, O'Callaghan has been involved in personnel and planning for U.S. Jesuits, whose office is in Washington.

Dutch-born theologian and author, the Rev. Henri M. Nouwen, 51, will give up his professorship at Yale Divinity School the end of this school year to go to Peru "to enter fully into the life of a poor parish," he said. A Roman Catholic, Nouwen has written a dozen books, including a number of volumes on the ministry that have become classics for Protestant as well as Catholics.