How to: Change orientation of slides.
Solution:
Select a radio button in the 'Orientation' group, in the 'Slide Setup' dialog box.
1) Select the 'File' menu and select 'Slide Setup...'. (The Slide Setup dialog box appears.)
2) Select the desired radio button from the 'Slides' list in the 'Orientation' group.
Slides radio buttons
3) Click 'OK'.
