Each project has a project configuration file. When you load a project, its project configuration file is read. Information in the project configuration file determines settings such as graphics monitor refresh rate, default time code, and default frame rate for playback.
A project's configuration file is created based on a project configuration file template. The template specifies project settings typically associated with the project's default resolution.
When you select a resolution, a project configuration template appears in the Configuration Template box. The project configuration file primarily defines the display environment, and in no way restricts you from working with clips of another resolution.