Download one of these apps on your lumia 630
Lumia System Updater
Scroll through the list and find Access Point click on it and it will take you to the store , install the app if not installed already , if it says installed and if you cannot find it in the settings then im afraid your operator must have blocked it for some reason.
Try changing your sim+operator and then find the app in settings , even then you cannot find it there are two possible reasons
- Microsoft itself has blocked that app in your region , so try changing the region to US and then look for the app.
- Even after changing the region you cannot find the app then it means Lumia 630 does not have this feature (if your model is a dual Sim it must have Access point in the settings search properly)
Final option reset your phone and update to the developer preview everything gets unlocked for you.
Hope i helped :-)