VRS and blanket orders

We are starting to implement Vendor Release Scheduling however, there is reluctance to go forward due to the onerous amount of set up around vendor calendars schedules for every blanket order.  We are going to put mulitple lines on the blankets and all vendors will follow the same shipping calendar.  Does anyone know if there is a way to create a Supplier Shipment profile/calendar (P4312) without identifying a line number?  IE the same calendar and profile would apply to all items on the blanket order.