Rent more restaurants
You are back in Rome. Sadly, your two restaurants are in ruin. Repair their equipment by clicking on a restaurant and pressing "Repair all" in the Architect menu. After that, you can continue with this mission. You have to rent four more restaurants, buy furnishings for them, hire employees and create menus.
Sabotage your local competition
With six functioning restaurants, you can proceed with sabotaging three restaurants of your competition. Open the gangster menu and go to these places. Sabotage each of the restaurants three times to close them.