We just released our team creation function. If you go to a group you can see the teams section right below the members section.
Go ahead create a team, you can always change and delete teams as you learn how the function works.The basic concept is this: After you have created a group, for example your Robotics Club, you can then create a team for the building of the robot and another for the programming of the robot. Each team will be able to see what the other team is doing and you can focus the leaning pages and the discussions to the appropriate team.
Give it a whirl and let us know what you think.