How to switch on hot spot on iPad air ? I am not getting apn setting hot spot

Thank you for using the Apple Support Communities

I apologize, I am having a difficult time understanding your question. Are you trying to use a hotspot on your iPad or are you trying to turn your iPad into a hotspot?

So you would like to use the same data plan on your iPad as you do on your phone?

You need to contact your cell provider for your iPad and ensure you have hotspot capability through them.