There are multiple ranks in Silocraft for staff who are loyal, active, and friendly. Here is a description of them.
Trainee: Trainees are chosen by Moderators who think that the person is loyal and worthy of the rank. It is basically the same as helper, no special commands, just a light green tag. Don't ask for this rank.
Helper: The helper rank is earned by application. There are no special commands with this rank. Around once every 1 1/2 months The Owner Silonix either accepts or declines the wave of applications. Requirements for this rank and the application format are here