How to Role Provision for all business units except for one

Summary:

We have 2 roles to auto provision. One for all business units except for 1, and the other role for that 1 BU.

Content (please ensure you mask any confidential information):

We have 2 roles to auto provision. One for all business units except for 1, and the other role for that 1 BU. How can we set this up as you cant select multiple BUs in a rule so the user would get both roles ?

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

23C

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