To approve multiple lines mark all or desired lines by checking the box and click on “Approve Selection”. Once selection approved it cannot be undone. Once a PO approved it will create a PO that can be send by email or print in PDF. Consider that if you have approved a line and a PO has been created, and a couple of day later you approve other line on the same PO for the same supplier the PO document will be updated. PO’s are grouped by supplier.