The best way is to send them regular email once a week informing them about how they are doing, but not in a pushy way. Just state that you are pleased with their progress and would love to help them to attain the next level, so that they can earn more money for themselves and their families. Show them the best way, marketing plans or whatever method you use to attain your goal as Team leader and let them know that if they copy you they will attain the same status as yourself.