The settings provided here will set the limits during order creation. Script Rules can reject a new order or hold the order for review depending on the selections made during setup (see below).

Script Rules works off the Honor System. If you requested to have an additional offer and/or charge added to the order, the message will be displayed but your team can ignore the message and click Accept to continue on with processing the order as is.
For orders that will be held for review, you will see on the Order Detail page that the item(s) on the order are in an Item Pending Review status.
Navigate to the Customer Detail page and scroll down to the Customer Interactions section to complete the CS Event for Sys:Order Held For Review.