How do I use the lock rate on subsequent Maersk Go bookings?  Can Maersk only manage my bookings for Maersk Ocean shipments? Can I merge several of my bookings into one? Can I insert my own internal reference Purchase Order number in my bookings? Where can I find the Rate of Exchange (RoE)?  Where can I see my locked rates on Maersk Go?  Can I change the departure date of my shipment? Can I negotiate the prices I see on Maersk Go?  Can I change the vessel my shipment is on? Can I change the origin (COO) of part of my cargo? Can I extend demurrage or port storage freetime? Can I change the origin (COO) of my shipment?