Modifying a subscription
You can modify the details of an EventHub Subscriber channel.
You can modify all fields for Custom event hub subscriptions. For Standard event hub subscriptions, you can only modify the Channel Process Type field.
You can also use the Fast Track and Slow Track features to identify whether the Event Hub subscriptions are processed or received in IEC over other subscriptions.
Note: Switching to another channel type reloads both old and new channels associated with the subscription.