For the shot above I used a very simple setup that you can try at home in your own studio space. The most important element is positioning your light at the right height and angle to create the shadow falloff you desire. There is no one way to do this since it is primarily trial and error. In my case I shoot tethered into Capture One which enables me to see my images on my laptop as I shoot them. I find this to be an incredibly useful aid in determining my lighting setup. Using just the small LCD backpanel on the camera can sometimes be deceiving so I always recommend shooting tethered if possible.
I used a Canon 5d Mark IV with the Sigma Art 50mm lens. My settings were 1/160 sec, f/2.8, ISO 100. I made sure to set the power on my Godox AD600 low enough as to not blow out the highlights. I used a 47" octabox with grid to control the light. I run a Tether Tools USB cable to my 2015 Macbook Pro which is currently running Capture One 10.
Once I position my light correctly to suit taste, I then take multiple exposures working with the model in order to show various posing and emotions. My lighting diagram can be found below.