How to Copy a Slide in PowerPoint
Once you have one slide exactly the way you want it, you can use it as a starting point for similar slides by using the duplicate or copy features.
Press Ctrl + D or right-click the slide and select Duplicate Slide.
The slide is duplicated and is positioned right after the original slide.
If you want to create a copy in another spot in the presentation, use copy and paste instead.
Press Ctrl + C.
Press Ctrl + V.