Leave approval on SSHR which varies (EBS)

I have a client who requires that the approval of the annual leaves on SSHR be configured with following rules:

- All general staff should have the leave approval go through the different supervisor levels and final approver should be the manager of the department except for one position which the final approver should be the HOD

- Managers leaves approved only by HOD (direct supervisor)

Please assist is this can be configured and how

Many thanks