The part of the body suggested for Upanaha (especially joints like knee joints, elbows etc) is anointed with warm oil. Then paste is applied as a thick pack in the areas, which is covered with the leaves & bandaged with cotton clothes.
It can be removed in the morning if the bandage is tied at night. If it is tied in the morning it should be removed at night. After removing the paste, gentle massage with warm oil is good.