Taleo requisition approval flow how can we set up one approver dynamically as Org manager?

Summary

Taleo requisition approval flow how can we set up one approver dynamically as Org manager?

Content

Hello ,
In Taleo requisition approval flow , we have approval a that we chose as users that we defined. we would Also like to have ONLY one of the approvers dynamically- as a organization manager.(the rest will remain functional roles ) Which means that one of the approvers will be set dynamically according to the requisition’s organization.(the rest will be the user name we chose in the ‘functional rule’
 

For now we have a ‘functional rules’ where the approves are hard coded users we picked.