How can I change the sheet size in Eagle? I want to do this both for board schematics and the package design area. The latter is especially annoying. I'm inputting a BGA part and I can't zoom in and scroll to the outer edges of the package, although I've been able to input it all through a script.
edit: I'm using Eagle Hobbyist 6.4.0 on a 13" MacBook Air OS X 10.8.3 with touchpad.