Different default format username generation for employee users and supplier users

Summary:

Different default format username generation for employee users and supplier users

Content (please ensure you mask any confidential information):

The default format username generation for employee users is email. Now if I want the username generation format to be FirstName.LastName only for the supplier users and email format for the employee users only, how can this be achieved?

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

Oracle Fusion Cloud Applications24B (11.13.24.04.0)

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