[header] How to duplicate slides in powerpoint [title] Open your powerpoint presentation if it isn't already open. [step] To do so, either double-click the presentation file, or open powerpoint and select the file's name from the left side of the window. [title] Find the slide you wish to duplicate in the sidebar. 
[step] The column of slides in the left pane of the powerpoint window displays all slides in your powerpoint presentation. [title] Right-click your slide's icon in the sidebar.