How can I Create a supplier quotation which the right items per the selected vendor from RFQ

Hi all
When I am creating a purchase order from ‘material request’ the default supplier can be selected and I can create relevant purchase order which the right items per the selected vendor
But while creating a ‘Supplier Quotation’ from a ‘Request from Quotation’ it sends all the items in the `Request From Quotation’ to the listed vendors in RFQ irrespective of what they supply,

How can I Create a supplier quotation which the right items per the selected vendor ‘from Request From Quotation’?