Dear User,
To use both landscape and portrait layouts in the same presentation create a
hyperlink between the two.
Move the slides you want to be in portrait orientation to a new presentation
file.
Create a link from your original presentation to the new presentation.
Select the text or object you want to be the link to the new presentation.
On the Slide Show menu, click Action Settings. Click Hyperlink to, and then
click Other PowerPoint Presentation in the list. Browse to the new
presentation and click OK.
Create a link from your new presentation back to the original presentation.
Select the text or object you want to click on to return to the original
presentation. On the Slide Show menu, click Action Settings. Click Hyperlink
to, and then click Other PowerPoint Presentation in the list. Browse to the
original presentation and click OK.
In the Slide title list, select the slide title that you want to link to in
the original presentation, and click OK.
Save both presentation files.
Hope this will help you .
Suvodip Moitra