How to autoload composer to load functions?

Question

Composer

Began to deal with autoloading through composer;
There is a Help folder at the root, where there are both files with classes (a class for working with storage, in the form of a folder with json files), and files with simple functions (for example, config ('filename.variable'), I see no reason to start a class for it) . The question was how to automatically load all this through composer autoload?
In composer.json indicated

"autoload": {
    	"classmap": [
    		"Help/"
    	]
    }

In the classes inside Help, I specified the namespace Help => They are normally loaded and called. But files with functions inside Help are not loaded (undefined). I tried to specify namespace Help in them, but it did not lead to anything.
Tell me how to load them, or an option to change the architecture?

Answer 1

An example of how everything is connected

{
  "autoload": {
    "psr-4": {
      "ishop\\": "vendor/ishop/core",
      "app\\": "app"
    }
  },