I downloaded a new Design Template from Office Online as a *.cab f

[Lenin Raj]

and opened it. And also copied that *.pot file to the default
folder("C:\Program Files\Microsoft Office\Templates\Presentation Design\").
But still that design is not appearing in the Slide Design Tab. But when i
open this *.pot file using PowerPoint, it opens in a new Presentation. But i
want to apply this Slide Design to my Existing Presentation. How to do this?
Please Help..