There is a "stem" and a leaf.... cut the stem so there is 1/2 to 1/4 inch left & a leaf. Apply 0.1% IBA (Rooting hormone)stick in well drained soil so leaf just touches the soil. mist & keep soil damp not wet... a new plantlet will form which will grow into the plant you desire.

Is it necessary to use a rooting horomone? I mean, will it work without it?

Thanks so much!