PDF (adobe.com)

Change your preferences

You can customize the look and behavior of Adobe Premiere Pro in many ways, from determining the default length of transitions to setting the brightness of the user interface. Most of these preferences will remain in effect until you change them. The preferences you set for scratch disks, however, are saved with your projects, so that whenever you open an project, it automatically defaults to the scratch disks you selected for it when you set up that project.

 Choose Edit > Preferences (Windows) or Premiere Pro > Preferences (Mac OS), and select the category of preferences you wish to change.