The Managing Preferences - Quality screen allows you to specify custom quality settings for published media files.  Currently, Presio allows you to specify a custom quality setting Windows Media published content.  You may do so by selecting an existing Windows Media Profile file (.prx) from your local machine.

By specifying a custom Windows Media profile on this screen, Presio will use that profile when encoding and compressing the final published presentation (when the Windows Media output format is chosen).