How to create an empty document
From the Project Tab of a particular project, click on the + New button in the top right
The system will ask you to provide the following information:
Folder
Version description (this must be unique across the whole project)
When you have added the necessary details, click on the Create button
The system will create a new document working version and display it as a green tile in the appropriate folder on the Project Tab
Hints and tips
By default, any user in the same organisation as the document creator will have read/write access to it. See OLD - Managing permissions if you want something different.