The Keyboard pane In the Keyboard Shortcuts tab, select Mission Control on the left and click Mission Control at the top of the right pane to select it. Click the current shortcut and press the key combination you want to trigger it.

Q: Why would I want multiple desktops?

A: Multiple desktops let you isolate applications, or even windows in the same application, from each other so you can work in a less crowded, less distracting environment. For example, you could close Mail's Message Viewer window to neaten things, but closing it means you’ll need to reopen it. Minimizing it means crowding your Dock and having to retrieve it later. When you put an app on its own desktop, it's out of the way, yet immediately available.

I generally have at least two projects going in Microsoft Word on any day; I keep the multiple windows for each on separate desktops.

Q: How do I make a new desktop?