Waterfall

Add chart method present in slide component or you can replace the chart using shape componenet. Base supported version for this type of chart is office 2016

Basic Code Sample

C#

powerPoint.AddSlide(PresentationConstants.SlideLayoutType.BLANK)
    .AddChart(data, new WaterfallChartSetting());

WaterfallChartSetting Options

At this moment waterfall supports base setting fromChartSetting future updates will get updated below.