Np!
You’ll pretty much not use instancing in any capacity. You can manually spawn meshes but they won’t be instances. I’d recommend manually setting up the environments in the level editor for mobile development. You’ll have the most control over your limited lighting and performance optimization
Google those terms I mentioned and read up and learn up. It’s unfortunately too hefty to go over it all right here. You can private message me on the forums if you want some help finding info though