Grid system implementation on chunks

Hi everyone, I am working on a plug in where I need to implement grid system on procedural generated terrain or planet(with perlin noise). I watched Sebastian Lague`s video tutorials about the procedural terrain generation with perlin noise, but could not find a way to implement a smaller cells on to chunks. My question is, is there any way to implement it with the usage of perlin noise? And which one could be easier to implement grid system, terrain or planet? The reason is, I need to get data from certain tile when I click on it. I did it with 2D, but I could not convert it in to 3D world. Can anyone please help with this? Thanks