How to register the same email address for multiple contacts in Bill Management ?

Summary:

We have a requirement to register same email addresses to different contacts under Bill Management.

Content (required):

We have a requirement wherein we need to register same email addresses to different account contacts. Under a particular party, we have several sub-accounts, and the ask is to be able to register the contacts of all these accounts which have similar email addresses. Is there a workaround to allow contacts with similar addresses to be registered under bill management for different accounts under the same party?

Version (include the version you are using, if applicable):

23B

Code Snippet (add any code snippets that support your topic, if applicable):