Have you used the following steps: 1. From a Home screen, tap Apps > Settings. 2. Tap Connections > Mobile hotspot and tethering > Mobile hotspot. 3. Tap On/Off to turn Mobile hotspot on or off.
Models are sometimes very different. This might be a case that reaching out to Sprint would be helpful since they actually are one of the very few companies using that model and would have more information on wifi and such.
I have the Luna J-3 or J-3 Luna and it definitely has hotspot and tethering so like the blessed person said maybe per model because the Luna J-3 does someone said that their emerge does not either way you can go to samsung.com like you are now LOL and they have step by steps or you can answer your model of your phone and ask if you even have the function. Someone also said that they would go to Play store and get a nap I'm sure there is a an app good luck