To set up ads for her local watch store in addition to the ads she already runs for her online store, Lucy should:
enable local products in her shopping campaign and set up a product filter for “local”
set up multichannel ads to direct customers to her online or local store
subdivide her product inventory and set different bids for her local and online only ads
begin the local inventory ads implementation process and complete the required steps
Local inventory ads showcase your products and store information to nearby shoppers searching with Google. When shoppers click your ad, they arrive on a Google-hosted page for your store, called the local storefront. Shoppers use the local storefront to view in-store inventory, get store hours, find directions, and more.
Read more here: https://support.google.com/merchants/answer/3057972