Exposing particular entities to Google Assistant with HASS Cloud

Hello! I using HomeAssistant Cloud to integrate my HASS instance with google assistant.
But I cant understand how to expose not all entities but several of them.
When I trying to setup google_assistant composent with list of entities to expose (https://www.home-assistant.io/components/google_assistant/) it says that I have no project_id key. And I really have not, because of I using HomeAssistant Cloud.