Modifying a Category in CRE Loaded

I have a Category in my store that contains a product that is sold on the site but picked up in different locations. I have a list of the locations and am seeking the best way to alert the customer of the different pick up location (So it is clear to the customer where to pick up the product). I was thinking a pop up window next to the view/add to cart button,Or an editable drop down menu? Other ideas welcome. Thanks