Workflow ReqApproval

I have a challenge. Our team wants to setup the workflow to route transactions from a Procurement Requester to go to an Advanced Procurement Requester for approval. I have that part figured out, but if an Advanced Procurement Requester submits the req they want to bypass that approval.

I understand the IF statements and what to do in the ELSE portion to bypass the approval. But I'm not sure if we can differentiate between the security role of the person who submitted the request.

Any help would be appreciated....