How to create an approval flow that is based on Proposed position's department?

Summary:

I am creating an approval rule for the 'Request New Position' transaction and the requirement is that the approvers are based on the proposed position's department, not based on the department of the requestor.

Content (required):

When Manager requests a new position and chooses a department that is not the same as his department, the approvers on the approval workflow will be the HR representative of the proposed solution's departments. Our system is based on AOR where scope is based on departments.

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

22C

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