Description: Setting this option in cancellation management settings will provide customers interested in canceling their subscriptions instructions that you provide for them.

From your customers' end, when they click to cancel a subscription in their customer portal, they will be prompted with a pop-up message with the content you wrote out in the field above.

As you can see, there is no cancel button in this pop-up message, so this is informing them to reach out to you for further details.