Demo Version

Hi everyone!
I’m new to Home Assistant and I’m currently trying to create a demo-version without components. I need to evaluate this open-source system within my bachelor project. The documentation says that there are indeed some demo components that can be configured. But how can this be done?
I would have interpreted it like:
platform: demo

And I guess I need to create as well demo entities, for example:
name: Kitchen

  • rollershutter.kitchen_window
  • lock.kitchen_door

Thanks in advance!

It’s described in the documentation: