Multi-app subscription setup

Hey Devs,

I'm looking to create an App Bundle that allows users to purchase a single subscription that covers all the apps.

This looks possible, here the Apple docs.

However, I'm stuck on the first step "offers the multi-app subscription":

To get started, use App Store Connect to create a separate and equivalent auto-renewable subscription for each app that offers the multi-app subscription so that users can subscribe from any app. For design guidance, see Human Interface Guidelines > In-App Purchase.

I see no options to add "Multi-app" support. I have dug through all the screens on existing products, and created new ones. Also checked the Subscriptions Groups between products. But even when I create an App Bundle with all products, the Subscriptions, and their Groups, seem to have no awareness of any app other than their primary one.

Any advice here would be appreciated.
Thank you.