This, that you created, is a thread.
So you want to use your phone as a "Hotspot" for the other device.
Now if your phone has a data plan, which is how you get internet for it, and you have WiFi capabilities on your tablet, then you can connect using the info below.
However, if the phone is connecting to WiFi (not a data plan) and you can't connect the tablet directly to the WiFi that connects to your phone, then you won't be able to access the it through the phone. For it to work, your tablet has to have it's own ability to connect to WiFi, and if the phone is connecting to a WiFi connection, then the tablet would be able to use that same thing. No phone involved.
You have to have a data plan on the phone and you have to have...