AnimationSettings.AdvanceMode (PowerPoint)

Returns or sets a value that indicates whether the specified shape animation advances only when clicked or automatically after a specified amount of time.

Possible Values are ppAdvanceModeMixed - Mixed mode, ppAdvanceOnClick - Only when clicked, ppAdvanceOnTime - Automatically after a specified amount of time.

If your shape doesn't become animated, make sure that the TextLevelEffect property is set to a value other than ppAnimateLevelNone and that the Animate property is set to True. The value of the AdvanceMode property can be one of these PpAdvanceMode constants.

ActivePresentation.Slides(2).Shapes(2).AnimationSettings.AdvanceMode = ppAdvanceModeMixed