Project properties can be edited by clicking on an empty space in the Timeline or on the Canvas.
In the Object Inspector, you can rename the project, edit its size and background.
Name The default name for a project is 'Untitled X' ('Untitled 1', 'Untitled 2', and so onward), and this is visible in the name property of the project. You can change the name by deleting the default name and typing in another one.
Select this option in order to specify the new dimensions of your project.
Click the Reset button to reset all values.
Click the drop-down box and choose a preset size or select the Custom Size menu item to enter custom dimensions.
Click on the Original Size menu item to restore the project to its original size.
Enter Width and Height to specify the size in pixels of your project.
Click the Apply button to set the new dimensions.
Set the background color of the project.
Click to choose Solid Color | Linear Gradient | Radial Gradient from the popup menu.
For solid color, click the thumb and select a color from the menu. Right click on the thumb to set the opacity (0 to 100%).
For gradient, click in the left thumb and select a color, then click in the right thumb and select the second color.
Use the slider to set the opacity value or enter it manually (0 to 100%).