If you are on ATT, it comes with a Mobile Hotspot app....unless you turned it off.
Once you go in to the app, it will have to be configured and assigned a name. You will be given a password to use.
It works very well. I use my Mega as a hotspot for my wifi Tab 3. Just have to remember that while it's on, you will be using your data!
Sent from my SAMSUNG-SGH-I527 using XDA Free mobile app
Sent from my rooted i527.