Need leave approvals to go to someone other than reporting to/department

Need leave approvals to go to someone other than reporting to/department

Our top two exec approve each others leave requests and Zoho will not allow me to mark them as reporting to each other. I tried creating a new automation/approval, choosing the specific employee number to submit and approve request. But It's not routing the leave requests to that person, there are still going to the Reporting two managers. 

How can I handle two people who approve each others leave?