How to utilize Department Trees in Payables Approval workflow

Summary:

How to utilize Department Trees in Payables Approval workflow? Find more info about Department Trees here: https://docs.oracle.com/en/cloud/saas/human-resources/24a/faucf/hcm-trees.html#s20032697

We are using Cost Center Manager approval, and the Cost Center Manager is defined for the department.

However, if the invoice amount is greater than X, then the approval should go for the next Cost Center Manager in the Department Tree.

Note that the Cost Center Manager of the next Department in the Tree might not be the actual line manager of the first Cost Center Manager.

Please advice how to achieve this, or if there are any other suggestions how to achieve the same outcome. Thanks.