Default email for case log notifications?

Does anyone know how to change the default email address for case log notifications? See screenshots attached. Whenever we open a case log it’s defaulting to our login email address.

We can manually update the email address when opening a case but I was just wondering if there’s a way we can change the default.

I’ve tried changing the email addresses in the notification settings but none of them seem to change the default email address show when creating a case log.

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screenshot-sellercentral-amazon-co-uk-help-hub-support-describe-1607778560371 (1).png 1378×1872 226 KB