Apple Motion 4 - Manual (Page 210)

To create a new project
1 Choose File > New (or press Command-N).
2 Choose a preset from the pop-up menu, then click OK.
A new project window is created. It is not saved to disk until you choose a save command
from the File menu. For more information on saving project files, see
Saving Projects .
Note: If you have already set a default preset, Motion will open a new project window
at that resolution, bypassing the Select Project Preset dialog.
Creating Blank Projects with Custom Settings
If none of the available presets meets your needs, you can create a new project with
custom project settings from the same window.
210 Chapter 6 Creating and Managing Projects