You have to be 13 for both Builder and Helper.

You must meet all the requirements to apply for these ranks, one major one of builder and helper is being 13. For trainee, you may not meet a certain requirement. You must be on the discord for a significant amount of time ( 1 week ), have good knowledge of the rules, and be verified on the discord. As you’re 11 you should be able to apply, unless you aren’t on the discord, are verified, etc.

If you meet all these requirements, and you still can’t apply, pm Kirstree or a discord manager on the discord.

I recommend reading the requirements beforehand.