When you're on a gymnastics team, do you have to do every event?

I've been doing gymnastics for a year, and I've mostly focused on the floor, and taught myself a lot on the trampoline. I was thinking of joining the gymnastics team rather than just take lessons. So next year I think I could train myself to be level 8 or 9 on floor, however I think on the bars/beam/vault, I'm probably like level 2 lol. I'm 15 right now, and it's kinda embarrassing competing against 3 year olds. So I was wondering, do people on the gymnastics team compete on all apparatuses? What should I do.