A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hello,
Welcome to Microsoft Community and thank you for posting your query.
I would like to inform you that, Size & Properties deals with sizing, alignment, and miscellaneous properties such as alt text and locks.
The Chart Area element is unique in that its Size & Properties options affect the chart as a whole. Size, scale, and aspect ratio can be adjusted only on the Chart Area element, from which all other chart elements derive their inherent size and scale. Waterfall chart has pre-defined chart area and hence Size & Properties (such as alignment) modification option is not available.
I hope the above information helps. Let us know if you need further assistance.
Thank you.