To everyone saying easiest way to tame is sit on tapajara seat or grapple to argy blah blah blah. Yea those are methods but not the easiest method. Easiest method (other than finding one glitch into a rock) is to use a griffin (if you don’t know, you can use weapons while flying it) simple follow the quetz and tranq em. I found its easiest to shoot from directly underneath the quetz. Push that button if this helped!