Contacting a Broker
Our Buyer and Seller have decided on their stock transaction. However neither knows about each other. All Drew knows is that he needs cash for a down payment on a home. All Meghan knows is that she's found a company that's introducing a product that will be a success.
They cannot conduct the transactions by themselves, so they contact a stock broker. A stock broker can be an individual you contact in person, via phone or email, or an online service where you enter the details of your transaction yourself.