How can we enable audit for creation of Bank Branches and corresponding Audit report

Summary:
Our client has a requirement to enable audit for creation of Bank Branches and want to extract audit report for the same.

Content (please ensure you mask any confidential information):

We checked under 'Manage Audit Policies' setup, where we selected product as Cash Management but there is no business object as 'Bank Branch'.

We also checked different attributes of Bank Account business object by extracting audit report, but we didn't see any bank branch attribute there as well.

So, how can we enable audit for creation of Bank Branches...?

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

25B