How to create root folders on Github?

Question

GitHub

How can I create a folder on github for repositories with a specific focus.
As an example: a common folder - layout, inside there are various layout projects for different customers
hierarchy:
- layout
---- 1 project
---- 2 project
---- 3 project
---- n project

Answer 1

A separate project is a separate repository.
We need something in common - we use submodules.