Press 'N' to bring up the players list. Next to your name there should be a 'lit up' letter 'S'. Click on it, give it a name, then select it in the garage.
ask for a setup. press N while your on the track a yellow S will show next to the name of the person who is sending it. click it. Save it. Shift+P and it should be under your setups click Date at the top of setups and it will be the top one