[Q] Enable WiFI tethering if not in ROM? Andorid 4.1.1

I have PIPO M8 3G tablet running on Android 4.1.1, the problem is that Tethering and Portable hotspot are missing from the menu.
Is there any way to enable tethering if it's not in the ROM?

The device is ROOTED.
It also cannot make phone calls and send SMS is there a way to enable them too?