In a world where you have free will, you have the power to change the world, one person at a time. Pay it forward is a concept that means you do something good for someone else without expecting a reward. Some people would say you do something in such a way as to inspire someone to do a good deed. This is the chance to do something big. No limits.
Take it further. The system invites you to do something meaningful to help three people. Consider this a challenge, an invitation to help others. Whether or not you see the results of some of your deeds, share what you know of at least one process. Take this opportunity to share related experience. As Gandi said, be the change you wish to see in the world;