How does your subscription feature work?

I want to know more about the subscription feature

Here's how to enable Subscription feature.

Appointo now integrates with Shopify's subscription API. Manage and charge recurring Appointment subscriptions directly.

How it works
1. Create Subscription Plan for a product in the Appointo app by clicking on the Appointo tab
2. Once a subscription-related product is purchased, it will send them an update related to subscription details
3. To complete the remaining booking, customers can login to customer portal and manage respective subscription bookings.

Checkout how an Appointment subscription works in Appointo:
https://youtu.be/_Q2A_3d_LKk