You can copy a slide in the PowerPoint app or online version, and then paste it somewhere else in the slideshow.

On the Insert tab, click the Table button in the Tables group. In the drop-down menu, select the small boxes that represent columns and rows and select how many rows and columns you want in your table ...

If you insert a shape in PowerPoint and you want to change it into another different shape without having to delete it or insert another shape into the slide, you can use the Change Shape feature that ...