Receipt of Goods

Hello-I have Sage 100 ERP 2014 version.  I am very new to Sage and was wondering if there is a way to receive in goods on a PO without creating an invoice to the supplier?  I would also like to go back and add in freight to the PO if needed.  I am trying to create real time inventory in my warehouse and right now we have a 1-2 week lag to receive in goods because we wait for supplier invoice and freight costs.  Thank you.