How do I submit a bid or proposal? All formal bids and proposals shall be submitted as specified in the solicitation document.Maricopa County, at its sole discretion, may require the Job Order Contractor to purchase from a specified or designated County supplier (i.e. Supplier Forms and Documents. SECTION 00500 - AGREEMENT. See form for mailing information. Completing the Supplier Registration does not guarantee that a supplier will be notified of potential Request for Proposal (RFP) and Invitation for Bid (IFB). Under construction subject to the agreement as complete. Use your MEID and password to sign up for DRS Connect, and fill out your vendor registration form. Without this form you will not receive compensation.