I can't change my Graphics Card? Windows 10 Laptop

[Zapgamer]

Hi, I was trying to get instuctions on overclocking my graphics card safely, but then I realized it wasn't for gaming (Intel(R) HD Graphics 4000) and then I found out I have another Graphics card somewher around my PC (GeForce GT 630M), yet for some reason I can't find the option to change my graphics card nowhere in my Computer. Help?

Just so you know (not sure if it will help) It's a 64bit operating system, Processor Intel(R) Core(TM) i5-3210M CPU @ 2.50GHz

Edit: By the way, don't be surprised byt his question if it is ridiculous, I'm not even close to knowing a lot about my laptop

 

[Zapgamer]

Actually, you know what? It's fine. Managed to put all my games as "Run with High Performance NVIDIA Processor" (or something like that), and now it's all good