How is a supplier notified that there is a new PO to review? How do we see updates later on in the process?
You should be emailed when a new PO is ready for acknowledgment. You can also quickly see these PO lines on the pending tab of either the dashboard or tasks view.
Once a PO has been acknowledged, you will see any requests on your updates tab. Once it is sent back to the buyer to approve it will move to your awaiting response tab.