Yeah anybody can be a community leader, no matter age, its only if you are below 12 i believe, you have to have your parents approve on e-mail after you send in you application! Good luck!
Actually, there is no set age for applying for community leader. If you are younger than 13 years old, your parents would've signed up with their e-mail, so you'll need them to check their e-mail once you've sent in your application for the questions