Rejection of approval based on Proposed manager assignment type

Summary:

We would like to Auto reject the transaction if the proposed Manager is not an Employee

Content (please ensure you mask any confidential information):

When transferring an Employee if Proposed manager is not a Employee, the transaction should get auto rejected.

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

23D

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