It's now easier than ever to enroll customers into your Stripe Subscriptions in person. All you need to do is make sure that your Products and Plans are setup at:
Next, open your app and press the "Products" button. From there, you'll see two tabs (Skus and Plans):
Select the plan you'd like to enroll the new customer into:
Then, enter in the card details and/or select a customer:
If you did not enter an email address for a Customer, you'll then be prompted to do so after you press "Charge":
You'll then see confirmation that your customer was subscribed and when their next payment will be due!