Another use for groups is available if Comet has set-up a trainer. A trainer is similar to an administrator except that the administrator may restrict what sections or sub-sections of Comet are available to the trainer. For example, the administrator may not want to allow trainers to be able to change any of Comet's preferences, or to add/edit trainers.
Another restriction that an administrator can apply to a trainer is to associate the trainer with a group(s). So the trainer may only work with the group they are associated with. Other trainers may be associated with this or other groups. In this way the actions of one trainer may be kept separate from other trainers.