A colony is structured like a traditional organization: in Teams.
You'll always find Root, which is the "colony-wide team". You can decide to create as many teams as you wish, each representing a different area of your organization.
Currently, you cannot create sub-teams, or delete teams.
Example of a Colony structure.
Create New Team
To create a new Team, navigate to New Action > Manage Teams > Create New Team
How to create a new team in Colony.
You can decide the Team name, define its purpose, and explain why you are creating it. You can change a Team's details later, but you cannot delete a Team.