Im sorry I can't. Its was a commercial project for an scientific institute of Argentine. It wasn't made in Phalcon but we use PHP and MySQL.
Now with Phalcon you must to create a master DB with customers and information about where the data is located. Then you set this data to create a second connection to "customer db" and the app works with this connection too
All the bussiness logic work with second db connection
I hope this information is useful