Currently when HR receives a requisition and "approves" it, this just creates a draft job posting on the Jobs page but that posting is not linked to the requisition workflow. There's no link or even notification that a draft posting has been created, so you have to leave the requisition and go to the Jobs list yourself and find the draft to continue. When the requisition process hits the point where it creates a draft posting, you should see a statement that a draft posting was created, including the job identifier and preferably also a link to edit the posting.