Press the “F3” key (it should also have a few squares and rectangles on it). Click on the “Mission Control” icon on your dock. If you have a trackpad, push upwards on the pad with three fingers. [1] X Research source
To open up an additional desktop space from Mission Control, move your mouse towards the top-right of the screen. A “+” sign will appear. Click it, and additional space will open. There is a total limit of 16 spaces. To remove an open desktop space, move your mouse to the space at the top of the Mission Control screen, and click the “x” that appears in the top left. If you have any open programs on the space that you close, they will be automatically moved to your first space.
This shortcut also can be used to go to each space individually. To do so, press CTRL and the number of your desired space, e. g. CTRL+2 to go to the second space.
OS X Lion is the first version of the OS X operating system to offer full support for running applications full screen. When you run a program in full-screen mode, it creates its own desktop space.
Spaces in OS X Lion allows you to expand into other desktop spaces while you work, without visiting Mission Control. If dragging isn’t an option for you, you can instead hover your cursor over the application’s title bar. At the same time, press and hold the trackpad or mouse, then press the Ctrl + Right/Left arrow keys to move the application one space to the right or left.
All Desktops: the app will open in every space. This Desktop: the app will only open in your current space. Desktop on Display [X]. If you have more than one monitor open, this app will only open on the space on the specific monitor. None: this app opens in whichever space you’re using at the time.
Choose All Desktops if you want the app to open in all spaces. Choose Desktop on Display [X] if you have multiple monitors connected and only want the app to open on a specific space on a specific display. Choose None if you don’t want it to open in any specific space and it’ll open in your current space instead. [4] X Research source After you do this, that app will open in the specified space only. To change that, go to System Preferences > Mission Control and deselect the checked box for switching.
Choose All Desktops if you want the app to open in all spaces. Choose Desktop on Display [X] if you have multiple monitors connected and only want the app to open on a specific space on a specific display. Choose None if you don’t want it to open in any specific space and it’ll open in your current space instead. [4] X Research source After you do this, that app will open in the specified space only. To change that, go to System Preferences > Mission Control and deselect the checked box for switching.
