This article shares possible use cases your app could support, as well as an example flow. You're certainly not limited to these use cases, but it can be a helpful jumping off point as you plan your app's implementation.
Your app could help site owners import a catalog from their external POS to Wix Restaurants. We recommend to use a draft catalog to update multiple entities of a catalog at once. This prevents customers from seeing partially updated menus.
Note: You can skip this step if a restaurant has only a single location.
Your app can help site owners keep their Wix Restaurants catalogs up-to-date with changes to their external POS. Before you can start, you'll need to have a mapping between the two catalogs. You can read about one possible way to create such a mapping in the Import a Catalog from an External POS example flow above.