Second approval level for leave request needed

Question

Is there a best practise solution to modify the standard leave request WF12300111, so that a second level of approval is possible?
It is necessary that first the team leader approves the request.
After him the department head has to approve the request as well.
The department head (line manager) can be determinated through the organizational management (OM) in the way it is done in the standard WF12300111.
But how to determinate the team leader who isn't labled in the OM unitil now?
Is it necessary to create a new link in om, which links the team lead to his team members and vice versa?
Or do you suggest a better way to solve teh problem?

Answer 1

as in all own implementations you should copy the sap workflow to an own one, like Siddharth proposed. I didn't try this, i never needed second level approval so take what i say with a grain of salt.  Copy the task that deals with the approval (the one showed in the UWL of the first manager) for the next approval (second manager). It should be then inserted in the workflow after the first approval. Between the original approval task and the second one you should insert a step where you call your own abap class to set the new processor of the workflow - copy the one used by SAP in the first approver task and remove what you don't need, modify the stuff that you could use.
You might be able to get the approval in the approval application using the BADI proposed by Siddharth but I am not sure using that BADI will create a UWL entry for the second approver.
@SAP: a propos the class used for workflow task methods--> stop creating final classes !