Click on the team icon next to the home icon at the bottom of the screen. Anyone asking for lives has a green HELP button. If you click on help, it gives them a life and you get a coin. You don’t lose a life, so you can help anyone who asks. It also costs nothing to ask for lives.

If your fan helper is not fully charged, you can drop a sparkly fan in the drop zone and you will have a fully charged fan help to use.