Prerequisites
If the content objects are not yet downloaded to the Local Repository on your PC, you have to start the Knowledge Workbench in online mode to have access to the Knowledge Warehouse.
You have opened the folder with the content objects in an Explorer window or you are editing a structure that contains the content objects.
Procedure
Editing Slides from the Info Object List of the Folder

If you want to edit slides that have already been
checked out, choose the slides in the local repository.The chosen content objects are downloaded from the Knowledge Warehouse to the Local Repository. PowerPoint is opened with a file containing the slides.
To view the content objects together with their folder in the Local Repository, select the node of the Local Repository in the Explorer window and refresh the display.
For more information on saving the file see
Saving the File.For more information on closing the file see
Closing the File.For more information on closing PowerPoint see
Editing Slides with the Structure Editor during Structure Maintenance
You can also edit slides from the Structure Editor:

If you have only checked out the structure, and not the slides it contains, then you can start the
Result
The slides are saved and PowerPoint is closed. The Changed attribute is given the value Yes for the edited slides in the Local Repository.