Project resources are located in the Assets folder as files. In other words, all files in the Assets folder are considered project resources.
The easiest way to create a new resource from the Start Page. Double-click on the required resource type.
You can also create a new scene using the New button in the Ribbon and using the context menu in the Resource Window.
After the New Object window will be opened. In the window you need to select a type, a file name and parameters of the creation.
After creation the resource will be opened for editing.