It is fairly easy for my Phaius tankerville. Just cut the flower stalk after the blooms have started wilting. Locate the dormant nodes or eyes, cut atleast an inch away from the node. remove the papery sheath covering the node carefully and then lay the pieces on moist cocopeat, perlite mix, nodes facing the sky. In about a month the nodes sprout both leaves and roots. But it usually will take 3 to 4 years for the new plants to flower.