What do I have to do to assign a normal map, glossy map, and texture map to the same character after FBX export from blender?

I applied a normal map, texture map, and glossy map to the character. How do I prepare it for export, and what do I do once it’s in my game so it still has all those maps? Do I assign 3 materials?

The physically based standard shader already provides various slots for many kinds of textures, pretty much all that you usually need. Just open up the material and click on the small circles. The ones you need are albedo, normal map and probably the metallic one.

I marked the small circles in the screenshot: