To insert or delete masters, you can click buttons on the Slide Master View toolbar, choose commands from the Edit and Insert menus, or right-click a master in the thumbnails on the left of the slide master view.

To delete a master:

  • Click the Delete Master button on the Slide Master View toolbar.
  • Choose Edit → Delete Master.
  • Right-click a master thumbnail and choose Delete Master.
  • Click a master thumbnail and press Delete.