You can refer to this official document: Create a request for quotation - Supply Chain Management | Dynamics 365 | Microsoft Learn. This procedure shows you how to create a request for quotation. This would typically be done by a purchasing agent. You can use this procedure in demo data company USMF or on your own data. You need to have set up solicitation types before you start. Once you've completed this task and you've created and sent an RFQ you can then enter the replies per vendor, compare them, and award the contract.