A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
This is quite easy.
Draw your shape on your slide, e.g. a Right Arrow shape, with the text "Next" on it.
Press Alt+F11 to open the VBE, then do Insert Module.
Paste in the following code:
Sub NextSlide()
If Application.SlideShowWindows.Count > 0 Then
SlideShowWindows(1).View.Next
End If
End Sub
Sub PasteOnEachSlide()
Dim sld As Slide, startingSld As Slide
Set startingSld = ActiveWindow.View.Slide
For Each sld In ActivePresentation.Slides
If Not sld Is startingSld Then
sld.Select
ActiveWindow.View.Paste
End If
Next sld
startingSld.Select
End Sub
Close the VBE and in PowerPoint select the shape.
The do Insert tab > Links group > Action
Select the Run macro option and choose NextSlide from the dropdown. OK.
You should now be able to copy that shape and paste (Ctrl+V) it on each slide, and the macro action should still be applied.
Obviously, for this to have any point to it, you need to make your slides NOT advance on a click. You do that via the Animations tab > Transition to this slide group > Advance slide on mouse click (uncheck).
To get that shape on to each slide you can run the macro PasteOnEachSlide via View tab Macros. Select PasteOnEachSlide and click run. But you must copy the shape you made (after having added the macro Action to it) using Ctrl+C first.
Hope that helps.
Cheers
Rich