Hi,If I have an business application that comprises a vendor app and a customer app, how do I charge for the vendor where it may be used on multiple devices by the same vendor?For example, I build an application to manage parcel delivery (so vehicle tracking, download routes, signing for parcels, etc). I want to build a customer app (for the people who want to receive parcels) which is free, and will be iOS and Android. I want to build the vendor app (for the delivery company) with a subscription of $10 per month, and let them use as many devices as they want. So Acme Delivery signs up for $10/month and has five vehicles, so needs five instances of the app. Both apps have limited in-app functionality, and the main business logic is in a web application accessed from the apps via an API.I am struggling to understand how Acme Delivery can download the vendor app to multiple devices, without either the vendor app being free or the vendor owner having to do an in-app purchase on every device. Th