Anyone who joins the customer’s local Wi-Fi network gets an option in the Google Home app to join the home. This action doesn’t give the person the access to the customer’s devices, but it sends a request to the current home members. The current home members can approve or deny that request.
Certain accounts don't have the ability to be a home member. You can't invite the persons with the following accounts:
Google Workspace (G Suite) accounts
Google Account for children under 13 (or the applicable age in the customer's country)