I design more than a thousand PowerPoint Presentations each month. However, I’ve been faced with incidents, where I had to merge Presentations or Copy each presentation Slide to Slide. Instead of putting up with all that Hassle, you can readily Merge Two Presentations on the go.
How to Merge Two Presentations
Using Re-Use Slides Feature
You can use the either way to Merge Multiple Presentations in powerpoint 2010 or earlier versions. You can also combine charts.