Take a leaf cutting, about 6" works for me.
Let it sit a day or so until the cut end goes hard and seals up.
Place it half it's length deep into sharp sand which is kept barely
moist, I like to use a terra cotta pot set on a terra cotta saucer and
that saucer standing in water in another saucer.
In a month or more you will get an offset that becomes your new plant.