Personally I leave it set to depth below keel, to which I add 1.5 metres for actual depth. There is a special corner of hell reserved for the person who then reset it to actual depth and did not tell me or put it back again! Fortunately I had already slowed right down thinking ... surprised there's this much water here as we came to a sudden stop.
Since lateral means side, multilateral means basically many-sided. The philosophy of multilateralism claims that the best solutions generally result when as many of the world's nations as possible are involved in discussions, and multilateralists often favor strengthening the United Nations.
(To help your understanding, refer to the Victor Cha's figure below) Multilateralism, whether in the form of membership in anr in international institutions,to bind the great power, discourage unilateralism, and give the small powers a voice and voting opportunities that they would not otherwise have.