Supplier purchase order approvals

Is there a way to set up a supplier purchase order to get approval from management without having to print them and take them to him/her to sign off on?

There is the whole Purchase Requisition process.

yea i think i found it in the help section. Thanks

There is also a PO approval process you can setup that is separate from the Purchase Requisition process. You can assign buyer PO $ limits and then anything over that limit goes to the designated person for PO approval. The PO is marked as Pending until the approval is done.

Do you do this at the Buyer level? Then how does it work for the approval? Do i have to do something else?