The way you organize and make use of your desktop spaces is up to you, but as you work with the desktops in Mission Control, you’re likely to run into apps that you want to have opened in all of your active spaces. You can set apps to open in all the spaces so that when you switch between desktops, the same apps are available on all of them, in addition to the ones you assigned to specific desktops.
Setting Up Multiple Desktop Spaces
Being able to assign an app to a space first requires setting up multiple desktop spaces. You do this using Mission Control. To add multiple desktop spaces to your Mac: To switch between multiple desktops, click the Mission Control icon in the Dock and select the preferred desktop in the Spaces bar that appears at the top of the screen. After you set up multiple desktop spaces, you can assign an application to appear on one or all of your desktops when it opens. Its icon must appear on the Dock for you to assign it, but it doesn’t have to stay on the Dock after it is assigned. You can remove an assigned application from the Dock, and it still opens in the desktop space or spaces you assign it to, regardless of how you launch the application.
Launch an Application in All Desktop Spaces
If you want an application to appear on all your desktop spaces whenever you open it: The next time you launch the application, it opens in all your desktop spaces. If you change your mind later and want to remove the chosen application from all the desktop spaces, right-click the Dock icon for the app and select Options > None to remove it. Then, the next time you launch the application, it opens only in the currently active desktop space.
Assign an App to a Specific Desktop Space
When you want to assign an application to a specific desktop space, rather than to all of them: Assigning apps to specific spaces or to all spaces can help you keep a tidy desktop, and create a better workflow.
