How to name an object within a PowerPoint slide?

PowerPoint for Windows:

1. Click on the object (textbox, shape, etc.) to select it.
2. In the Drawing Tools | Format tab, click on Selection Pane in the Arrange group.
3. From there, you’ll see names of objects.
4. Double click (or press F2) on any name and rename it. By deselecting it, it becomes renamed.

You can also get to this from the Home tab -> Drawing group -> Arrange drop-down -> Selection pane or by pressing ALT + F10.