Supplier Quoting
When a user sends an RFQ to a supplier the supplier receives an email notification.
The supplier can then logon and view RFQs received, click on 'Supplier RFQs, 'RFQs received'' :-

A list of RFQs will be displayed :-

Select an RFQ and click view to see the customers material requirements :-

Or click create quote which will display a quote form :-

Click on either unit price or cost cells and enter your quote amounts, cost and totals will be calculated :-

You can either save the quote for future work or post it to the customer. If the customer after receiving the quote accepts it yo will be notified by email.