Let's say your advertiser has different locations and wants a way for customers to choose which location to opt-in. If you have company branches set up, you can create a landing page and use the location widget. This will add an option for users to enter their zip code then see a list of the locations. From there, they can decide which location to join! If you wanted to check the opt-ins by locations, you would go to Reports > Geo Opt-in.