Here is an example of a cutting being rooted in a 50/50 vermiculite/pearlite mixture.  Cut a metal hanger and positioned on the pot to allow for a plastic bag to enclose it in order to create a humid environment.  I will often put three or four cuttings per pot to reduce the number of pots.  After about 4-6 weeks, I put them out of the medium to check for roots.  REMEMBER~~ The roots that form are VERY delicate and fragile.  They only grow at the very bottom of the cutting and can fall off easily if you aren't tender when checking on them.  Ideally, you put one cutting per pot and wait until you see some growth and/or you see roots coming out from the bottom of the pot.