The driver chooses the number of weeks until the next delivery.
Example: The driver decides to return in 6 weeks, this is written on the delivery ticket and keyed into the system when the delivery invoice is entered. Simply key in the number of weeks until the next delivery in the "Wks" text box on the same line as the delivery and Lynx will handle the rest.
If your drivers are using the Lynx On-Truck system, they can enter the number of weeks into the delivery invoice themselves.