What role gives access to Transaction Console for POs

What role gives me access to manage purchasing workfow transactions, run Diagnotics and perform Reassign/Withdraw workflow (in case an Approver is on leave)? I have seen other threads posted in here regarding access for transaction console, but the recommended roles were HCM related. Since I only need to manage purchasing documents (PRs, POs, COs), I was wondering if there is a role/privelege specific to Procurement.