Here is the answer I received directly from the Apple Support Support Team:
Hello,
Recommended locations Applications are recommended on the lock screen and in the App Store based on a number of factors, including their popularity in the location, and there is no mechanism or process by which the application developer can add his application to the list of recommended applications.
However, if your iOS application is directly related to a location or a meeting place (for example, an iOS application for a shopping center that is published by the owner or operator of the shopping center), and you think that the relevance of iOS Apps ensures that it is included in the Recommended Applications list, then You are invited to submit an improvement request through http://bugreport.apple.com/ and ask Apple to consider whether your iOS application should be included in the list of recommended applications for this location.
You must provide as much detail as possible in the request for the extension “about the application and the location / placement”, for example, “Application ID”, “Application name”, “Application URL in the application store”, name of the venue, meeting place ( address and lat / lon), the relevance (if any) of your iOS application for the place / place and the relationship (if any) between you as the developer and owner / operator of the place / place.
Submitting a promotion request does not guarantee that a particular iOS application will be added to the list of recommended applications for a place or place, and the only feedback on request from Apple will go through the http://bugreport.apple.com/ error reporting system.
Hello,
Apple Developer Technical Support
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