Resize Illustrator Document Canvas - Where?

[Jeffery.Wright]

Where is this option? Why isn't it plainly accessible?

Does anyone know? Thanks. 

[Bobby Henderson]

Go to the File menu and choose Document Setup. There is an option in there for editing art aboards. Depending on the kind of work space you're installation of Illustrator is using a Document Setup button could be visible on the top tool bar.

Also, in the Artboard panel there is a flyout menu that shows Artboard Options. The selected art board can be resized there too.