To set the page orientation for all of the slides in your presentation, on the Slide Master tab, click Slide Orientation, then click either Portrait or Landscape. To remove any built-in slide layouts that accompany the default slide master, in the slide thumbnail pane, right-click each slide layout that you want to delete, then click Delete Layout. In Slide Master View, the slide master appears at the top of the thumbnail pane with related layouts beneath it.Ĭlick to select the master slide, then click Master Layout on the Slide Master tab.
A slide master is the top slide in a hierarchy of slides that stores information about the theme and slide layouts of a presentation, including the background, color, fonts, effects, placeholder sizes, and positioning.