How to trigger a journey for new managers?

Summary:

We are trying to trigger a journey to anyone who becomes a manager

Content (please ensure you mask any confidential information):

We have built a fast formula/eligibility profile to identify new managers. However, we need a way to trigger the journey to be assigned. If a manager change occurs, the action happens on the employee record. Nothing happens on the manager record. Is there another way to trigger the journey to go to the manager?

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

25C

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