Impress comes with 28 pre-packaged slide masters. They are shown in the Master Pages section of the Tasks pane. This section has three subsections: Used in This Presentation, Recently Used, and Available for Use. Click the + sign next to the name of a subsection to expand it to show thumbnails of the slides, or click the – sign to collapse the subsection to hide the thumbnails.
Each of the slide masters shown in the Available for Use list is from a template of the same name. If you have created your own templates, or added templates from other sources, slide masters from those templates will also appear in this list. See
Working with templates for more about templates.