You can lay the whole stem on moist medium. (Eventually the babies will have to be separated from the cane, but a way down the line, which will give the babies a fighting chance being nursed by the mother cane until then). You can cut off the strongest most vigorous babies and plant them up seperately. You can cut them all off and pot all of them seperately. Any way works, it will be your choice as you can estimate the health of the babies.