I like to have certain applications running in all of my different Spaces. Here’s how to assign a specific application to all Spaces.
1. Choose Finder and select System Preferences.
2. Choose Expose and Spaces.
3. Choose the Spaces tab at the top of the window.
4. Click the + under the Application Assignments area.
5. Find and select the application you wish to assign to all Spaces and click Add.
6. Click the area in the top potion of the window and select Every Space.