The exhibition is the project “container”: you set title, description, and optional start/end dates. From there you manage 3D rooms and sections (walls) that visitors browse on the public site.
Public visibility may be moderated under platform rules; you can keep editing privately in the meantime.
Create an empty exhibition first, then add at least one room or wall depending on the experience you want to offer.
Wireframe: project header with title, dates, and visibility state.