Make shallow cuts with a shear just below the node of a mature branch of the vine. Be cautious as the sap is toxic. Elevate your pot with the medium to where the incision is. you may need a plant hanger to put on the pot. Cover with the medium about one inch deep the part where you made incision. To prevent the branch from snapping out of the pot you weigh down with stone smaller than your fist. The stone will also provide heat needed to facilitate the rooting. In three weeks time inspect you will fine roots.
Mass propagation here in the country is done in a green house equipped with a timer for misting.