Our standard default for week-on-week reporting has each week starting on Sunday. This means that, for example, in a sales dataset, we will sum total sales from Sunday to Saturday for a week-on-week comparison.
However, for some industries, week-on-week reporting requires the start date to be different (for example, I want my week to start on a Monday instead of Sunday). This is where dataset Owners / Editors can change the week-on-week start day. This configuration needs to be adjusted for each dataset (as not all datasets have weekly granularity, and it might be that different reporting scenarios require a different setup).