Bill-to-location to be automatically populate based on ship to location. Reflects exactly what had b

• Hello Team,
• There is an requirement from client of 2 things needed,
• 1. Bill-to-location to be automatically populate based on ship to location. Reflects exactly what had been selected as ship-to-location.
• 2. Grey out bill-to-location once above implemented.
• Expected outcome, whenever you select/change a ship-to-location; bill-to-location will automatically change to reflects the latest ship-to-location.
• If anyone has idea on how this can be done kindly let me know