You can combine multiple PowerPoint Presentations using Reuse Slides, VBA code, Cop-Paste. The 1st preserves formatting while the 2nd can merge any number of files.

How to Drag Slides From One PowerPoint to Another PowerPoint. If you've ever had to manually combine the contents of separate PowerPoint presentations by typing or copying and pasting slide ...

To create a single presentation out of multiple Microsoft PowerPoint 2010 presentations, you must merge the files. PowerPoint enables you to do this with its Reuse Slides feature, which imports ...

Learn how to fragment shapes & images in PowerPoint using the Merge Shapes feature. The Fragment feature overlaps shapes and turns them into small pieces.

You can improve your PowerPoint presentations by both improving your presentation skills and making better use of the program.