Purchase Requester Managerial Hierarchy with in Request for Quote Workflow

Hello Guys,
I have a requirement that, Purchase Requisition created and approved via Purchase Requisition creator’s Manager via Manager Hierarchy in the workflow.
Now Purchase requisition converted to Request for Quotes and we have our customized workflow for Request for Quotes. Now after vendor replies ; Request for quotes needs to be submitted and send back to that Purchase Requisition creator’s manager with-in the Request for Quotes workflow for reviewing the vendor replies.
Note: I can get the PR creator’s manager hierarchy position using method on the table and adding a parm method in the Request for quote workflow’s document query , but not so sure how to achieve the rest or may be i am doing wrong approach.
Kindly guide me on that. Thanks