EDITING IN PROGRESS
You can upload items as furniture items to place in room templates with the 'Edit Room' button. These furniture items can be dragged from your inventory and placed in your room. The items don't necessarily have to be furniture such as chairs, they can be game items (like the Greedy Greedy table in the Welcome Center), a presentation tool or pieces of a structure which users can use to build a larger item (e.g pieces of a race track).
1. Have the item object you want to upload as a furniture item in your scene in Unity. Once it is in the scene, click on it in the hierarchy.
2. In the Inspector window, click on 'Add Component', search for Furniture and add the 'Room Furniture' component.