free shipping for specific products shipped to a specific location

[donnahiebert]

Hi, I used to have a shipping option on my site that allowed customers to choose to have their items shipped to a specific location free of charge. I needed to discontinue it for a period of time. Now I want to add it back to my cart and I can not find a way to enable/recreate it. 

Specifically it allowed customers to choose to have their item delivered to location of their choosing and pay the fixed shipping rate. Or, they could choose to have the item sent to, in this case, a university campus, at no charge.

How do I set up the no charge option?

Thanks!