The modern ecumenical movement with its primary goal of the visible unity of the churches has given attention to ecclesiology. This has been true both in the work of Faith and Order and in many of the bilateral dialogues. Yet both Faith and Order and the dialogues have stated remarkably little about the structures needed for church unity. This article suggests that by building on the concept of differentiated consensus it may be possible to recognize and utilize a concept described as differentiated participation to move the churches toward greater visible unity. In conclusion some examples are given.