You have to use an inputbox to get the value (string) and then navigate to the slides/shapes and set the value to the inputbox string:
Sub test() Dim x As String x = InputBox("What is your name?", Name) ActivePresentation.Slides(1).Shapes.Title.TextFrame.TextRange = x End Sub
It's not as intuitive as excel, I'd start here
Or, if you're brave, try a userform