How to charge RecurringApplicationCharge for Partner-Friendly apps?

Thanks Zameer. I think you are saying that when the shop moves to a paid plan, request at my webhook for the store. But then how do I create a RecurringApplicationCharge? The RecurringApplicationCharge requires a situation where I present the user with a callback. However, when I get the request at the webhook, there is no user to show the callback to.