Co.Leader is basically an attached rank their job is to help out their Leader with any jobs a Leader needs help with a Co.Leader will be assigned to a specific Leader you do not get to pick which Leader you are assigned to an Owner or a founder will assign you to a Leader you will be with that Leader throughout your whole rank unless you are promoted or demoted other wise you will always be with that Leader unless they are promoted or demoted this rank isn't as easy as you think so don't think on rushing into it it's just as hard as Leader.