SHOPIFY EXPERT for Drop Down Menu for Delivery Addresses

I need Drop Down Menu for listing addresses in our Shopify store. We deliver food only to Busy Office Buildings. Since we get multiple orders to same address, we have Free delivery for them. We can't accept food orders from small places, we will loose money. WE NEED: that Admin list address where we deliver, customer choose from listed address. ALSO attached to CHECK OUT so it fill automatically address, what was chosen from drop down menu. Thanks, Julius