By default prior sales are reviewed based on the current week's ending date (Sunday). By enabling this option, you will be able to specify a different ending date for the sales review process.

 

•The week ending date must fall on a Sunday.

 

The "Generate from past sales" option requires that "Recalculate weekly sales totals" be checked for it to work properly when you are using the "Exclude from Auto PO Past Sales" option for specific customers.