If you need to join PPT files into one single PowerPoint presentation then it is possible. In order to achieve this, you need to first open the master powerpoint presentation where you want all other slide to appear. You can separate the presentation by powerpoint sections if you want to keep it organized and later know which Slides belong to which PPT file.
Then, open the PPT files that contains the Slides you want to copy to the master powerpoint file. In the Slides gallery on the left you can see all the Slides and you can click on the desired Slides and then select the range of Slides you want to copy. For example, the Slides in this example Golden powerpoint template can be copied.
As you can see, the slide list of the left contains a thumbnail view for all the Slides in the presentation. You can select all these Slides by keeping Shift key pressed. Then use CTRL-C to copy the Slides and move to your other presentation where you want to append the Slides.
In the master presentation where you want to append the Slides, use CTRL-V to paste the Slides. That’s all. Don’t forget to save the final presentation with the new Slides pasted. Also, you can repeat the steps to append many different PPT files into a single PPT presentation. Of course if you have lot of .ppt then you may be interested to use a mass append or bulk mode. This can be helpful to combine multiple Slides or merge powerpoint presentations in a single file.
Alternatively you can use a tool like MS PPT Join from Sobolsoft to automate the process. Learn more in http://www.sobolsoft.com/pptjoin/
MS powerpoint Join (Merge, Combine) Multiple Presentations Software
This software offers a solution for users who want to join many MS powerpoint files together. This software will stack files up and down in any order that you specify. To protect your original files, the results of the join will be saved as a new powerpoint file. By instantly appending your files in batch, this software will save you hours of time spent copying and pasting. powerpoint 2000 or higher required.