In OLFM Customer Management ability to assign the same bank account to different customers

Summary:

There are 9 customers that have the same bank account. In Customer Management on the billing site, how can I add the bank account to additional customers. I have made the initial customer as Primary.

Content (please ensure you mask any confidential information):

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

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